A protestor takes a meditative posture while demonstrating against the death in Minneapolis police custody of African-American man George Floyd, and of Dion Johnson, who was killed in Arizona, outside of Phoenix police headquarters in Phoenix, Arizona, U.S. May 29, 2020. Picture taken May 29, 2020. REUTERS/Nicole Neri

U.S. Chairman of the Joint Chiefs of Staff Gen. Mark A. Milley testifies beside U.S. Defense Secretary Mark Esper before a Senate Armed Services Committee hearing on "Department of Defense Budget Posture" on Capitol Hill in Washington, U.S., March 4, 2020. REUTERS/Tom Brenner

U.S. Chairman of the Joint Chiefs of Staff Gen. Mark A. Milley testifies beside U.S. Defense Secretary Mark Esper before a Senate Armed Services Committee hearing on "Department of Defense Budget Posture" on Capitol Hill in Washington, U.S., March 4, 2020. REUTERS/Tom Brenner

U.S. Chairman of the Joint Chiefs of Staff Gen. Mark A. Milley testifies beside U.S. Defense Secretary Mark Esper before a Senate Armed Services Committee hearing on "Department of Defense Budget Posture" on Capitol Hill in Washington, U.S., March 4, 2020. REUTERS/Tom Brenner

U.S. Chairman of the Joint Chiefs of Staff Gen. Mark A. Milley testifies beside U.S. Defense Secretary Mark Esper before a Senate Armed Services Committee hearing on "Department of Defense Budget Posture" on Capitol Hill in Washington, U.S., March 4, 2020. REUTERS/Tom Brenner

Senate Armed Services Committee chairman Senator James Inhofe (R-OK) speaks with ranking member Senator Jack Reed (D-RI) before a hearing on "Department of Defense Budget Posture" with U.S. Chairman of the Joint Chiefs of Staff Gen. Mark A. Milley and U.S. Defense Secretary Mark Esper on Capitol Hill in Washington, U.S., March 4, 2020. REUTERS/Tom Brenner

U.S. Chairman of the Joint Chiefs of Staff Gen. Mark A. Milley testifies beside U.S. Defense Secretary Mark Esper before a Senate Armed Services Committee hearing on "Department of Defense Budget Posture" on Capitol Hill in Washington, U.S., March 4, 2020. REUTERS/Tom Brenner

Senator Tom Cotton (R-AR) greets U.S. Defense Secretary Mark Esper and U.S. Chairman of the Joint Chiefs of Staff Gen. Mark A. Milley before a Senate Armed Services Committee hearing on "Department of Defense Budget Posture" on Capitol Hill in Washington, U.S., March 4, 2020. REUTERS/Tom Brenner

U.S. Defense Secretary Mark Esper, left, testifies beside U.S. Chairman of the Joint Chiefs of Staff Gen. Mark A. Milley before a Senate Armed Services Committee hearing on "Department of Defense Budget Posture" on Capitol Hill in Washington, U.S., March 4, 2020. REUTERS/Tom Brenner

U.S. Defense Secretary Mark Esper, left, testifies beside U.S. Chairman of the Joint Chiefs of Staff Gen. Mark A. Milley before a Senate Armed Services Committee hearing on "Department of Defense Budget Posture" on Capitol Hill in Washington, U.S., March 4, 2020. REUTERS/Tom Brenner

U.S. Chairman of the Joint Chiefs of Staff Gen. Mark A. Milley testifies before a Senate Armed Services Committee hearing on "Department of Defense Budget Posture on Capitol Hill in Washington, U.S., March 4, 2020. REUTERS/Tom Brenner

U.S. Chairman of the Joint Chiefs of Staff Gen. Mark A. Milley testifies before a Senate Armed Services Committee hearing on "Department of Defense Budget Posture on Capitol Hill in Washington, U.S., March 4, 2020. REUTERS/Tom Brenner

U.S. Defense Secretary Mark Esper testifies before a Senate Armed Services Committee hearing on "Department of Defense Budget Posture on Capitol Hill in Washington, U.S., March 4, 2020. REUTERS/Tom Brenner

Sergent Johnny Senghe strikes a yoga pose while his teacher Sergent Felixon Musa corrects his posture during a training session at country's military headquarters in Freetown, Sierra Leone October 25, 2019. Picture taken October 25, 2019. REUTERS/Cooper Inveen REFILE - CORRECTING DATE

Aug 21, 2019; St. Petersburg, FL, USA;Tampa Bay Rays shortstop Willy Adames (1) celebrates with right fielder Austin Meadows (17) as he scores the winning run on Seattle Mariners relief pitcher Matt Magill (61) (not postured) wild pitch in the ninth inning at Tropicana Field. Mandatory Credit: Kim Klement-USA TODAY Sports

Aug 21, 2019; St. Petersburg, FL, USA;Tampa Bay Rays shortstop Willy Adames (1) celebrates with teammates as he scores the winning run on Seattle Mariners relief pitcher Matt Magill (61) (not postured) wild pitch in the ninth inning at Tropicana Field. Mandatory Credit: Kim Klement-USA TODAY Sports

Aug 21, 2019; St. Petersburg, FL, USA;Tampa Bay Rays shortstop Willy Adames (1) celebrates as he scores the winning run on Seattle Mariners relief pitcher Matt Magill (61) (not postured) wild pitch in the ninth inning at Tropicana Field. Mandatory Credit: Kim Klement-USA TODAY Sports

U.S. Defense Secretary Jim Mattis (R), and Joint Chiefs Chairman General Joseph Dunford (L) testify before a Senate Armed Services Committee hearing on the “Defense Department budget posture in review of the Defense Authorization Request for FY2019 and the Future Years Defense Program” on Capitol Hill in Washington, U.S., April 26, 2018. REUTERS/Aaron P. Bernstein

U.S. Defense Secretary Jim Mattis testifies before a Senate Armed Services Committee hearing on the “Defense Department budget posture in review of the Defense Authorization Request for FY2019 and the Future Years Defense Program” on Capitol Hill in Washington, U.S., April 26, 2018. REUTERS/Aaron P. Bernstein

U.S. Defense Secretary Jim Mattis testifies before a Senate Armed Services Committee hearing on the “Defense Department budget posture in review of the Defense Authorization Request for FY2019 and the Future Years Defense Program” on Capitol Hill in Washington, U.S., April 26, 2018. REUTERS/Aaron P. Bernstein

U.S. Defense Secretary Jim Mattis and Joint Chiefs Chairman General Joseph Dunford testify before a Senate Armed Services Committee hearing on the “Defense Department budget posture in review of the Defense Authorization Request for FY2019 and the Future Years Defense Program” on Capitol Hill in Washington, U.S., April 26, 2018. REUTERS/Aaron P. Bernstein

U.S. Defense Secretary Jim Mattis testifies before a Senate Armed Services Committee hearing on the “Defense Department budget posture in review of the Defense Authorization Request for FY2019 and the Future Years Defense Program” on Capitol Hill in Washington, U.S., April 26, 2018. REUTERS/Aaron P. Bernstein

U.S. Joint Chiefs Chairman Joseph Dunford arrives to testify before a Senate Armed Services Committee hearing on the “Defense Department budget posture in review of the Defense Authorization Request for FY2019 and the Future Years Defense Program” on Capitol Hill in Washington REUTERS/Aaron P. Bernstein

U.S. Defense Secretary Jim Mattis and Joint Chiefs Chairman General Joseph Dunford testify before a Senate Armed Services Committee hearing on the “Defense Department budget posture in review of the Defense Authorization Request for FY2019 and the Future Years Defense Program” on Capitol Hill in Washington, U.S., April 26, 2018. REUTERS/Aaron P. Bernstein

U.S. Joint Chiefs Chairman Joseph Dunford testifies before a Senate Armed Services Committee hearing on the “Defense Department budget posture in review of the Defense Authorization Request for FY2019 and the Future Years Defense Program” on Capitol Hill in Washington REUTERS/Aaron P. Bernstein

U.S. Joint Chiefs Chairman Joseph Dunford testifies before a Senate Armed Services Committee hearing on the “Defense Department budget posture in review of the Defense Authorization Request for FY2019 and the Future Years Defense Program” on Capitol Hill in Washington REUTERS/Aaron P. Bernstein

U.S. Defense Secretary Jim Mattis testifies before a Senate Armed Services Committee hearing on the “Defense Department budget posture in review of the Defense Authorization Request for FY2019 and the Future Years Defense Program” on Capitol Hill in Washington, U.S., April 26, 2018. REUTERS/Aaron P. Bernstein

U.S. Defense Secretary Jim Mattis testifies before a Senate Armed Services Committee hearing on the “Defense Department budget posture in review of the Defense Authorization Request for FY2019 and the Future Years Defense Program” on Capitol Hill in Washington, U.S., April 26, 2018. REUTERS/Aaron P. Bernstein

U.S. Defense Secretary Jim Mattis testifies before a Senate Armed Services Committee hearing on the “Defense Department budget posture in review of the Defense Authorization Request for FY2019 and the Future Years Defense Program” on Capitol Hill in Washington, U.S., April 26, 2018. REUTERS/Aaron P. Bernstein

A Congressional aide stands by a chart showing the advancement of nuclear weapons programs in relation to the United States as U.S. Defense Secretary Jim Mattis testifies to the House Armed Services Committee on "The National Defense Strategy and the Nuclear Posture Review" on Capitol Hill in Washington, U.S., February 6, 2018. REUTERS/Joshua Roberts

U.S. Defense Secretary Jim Mattis testifies to the House Armed Services Committee on "The National Defense Strategy and the Nuclear Posture Review" on Capitol Hill in Washington, U.S., February 6, 2018. REUTERS/Joshua Roberts

Air Force Gen. Paul Selva, Vice Chairman of the Joint Chiefs of Staff, listens as U.S. Defense Secretary Jim Mattis testifies to the House Armed Services Committee on "The National Defense Strategy and the Nuclear Posture Review" on Capitol Hill in Washington, U.S., February 6, 2018. REUTERS/Joshua Roberts

U.S. Defense Secretary Jim Mattis testifies to the House Armed Services Committee on "The National Defense Strategy and the Nuclear Posture Review" on Capitol Hill in Washington, U.S., February 6, 2018. REUTERS/Joshua Roberts

U.S. Defense Secretary Jim Mattis testifies to the House Armed Services Committee on "The National Defense Strategy and the Nuclear Posture Review" on Capitol Hill in Washington, U.S., February 6, 2018. REUTERS/Joshua Roberts

U.S. Defense Secretary Jim Mattis testifies to the House Armed Services Committee on "The National Defense Strategy and the Nuclear Posture Review" on Capitol Hill in Washington, U.S., February 6, 2018. REUTERS/Joshua Roberts

U.S. Defense Secretary Jim Mattis testifies to the House Armed Services Committee on "The National Defense Strategy and the Nuclear Posture Review" on Capitol Hill in Washington, U.S., February 6, 2018. REUTERS/Joshua Roberts

U.S. Defense Secretary Jim Mattis testifies to the House Armed Services Committee on "The National Defense Strategy and the Nuclear Posture Review" on Capitol Hill in Washington, U.S., February 6, 2018. REUTERS/Joshua Roberts

House Armed Services Committee Chsirman Mac Thornberry (R-CA) chairs a committee hearing on "The National Defense Strategy and the Nuclear Posture Review" on Capitol Hill in Washington, U.S., February 6, 2018. REUTERS/Joshua Roberts

U.S. Defense Secretary Jim Mattis testifies next to Air Force Gen. Paul Selva, vice chairman of the Joint Chiefs of Staff, during a House Armed Services Committee hearing on "The National Defense Strategy and the Nuclear Posture Review" on Capitol Hill in Washington, U.S., February 6, 2018. REUTERS/Joshua Roberts

U.S. Defense Secretary Jim Mattis arrives to testifies before the House Armed Services Committee on "The National Defense Strategy and the Nuclear Posture Review" on Capitol Hill in Washington, U.S., February 6, 2018. REUTERS/Joshua Roberts

U.S. Defense Secretary Jim Mattis arrives to testify to the House Armed Services Committee on "The National Defense Strategy and the Nuclear Posture Review" on Capitol Hill in Washington, U.S., February 6, 2018. REUTERS/Joshua Roberts

U.S. Defense Secretary Jim Mattis arrives to testify to the House Armed Services Committee on "The National Defense Strategy and the Nuclear Posture Review" on Capitol Hill in Washington, U.S., February 6, 2018. REUTERS/Joshua Roberts

Ryleah Geisner, 8, with reflective and surface EMG sensors attached to her body, walks in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. Picture taken on February 9, 2017. REUTERS/Rick Wilking

Ryleah Geisner, 8, with reflective and surface EMG sensors attached to her body, walks in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. Picture taken on February 9, 2017. REUTERS/Rick Wilking

Ryleah Geisner, 8, has reflective and surface EMG sensors attached to her body by Brittney Martz, clinical therapy aide (L) and Joanna Roybal, physical therapist (R,) before walking in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. Picture taken on February 9, 2017. REUTERS/Rick Wilking

Nune Karapefian (L) talks with staff after her daughter Ryleah Geisner, 8, walked with reflective and surface EMG sensors attached to her body in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. 2nd L is Joanna Roybal, physical therapist, 2nd R is Kayla Burnim, gait lab engineer and at right is Brittney Martz, clinical therapy aide. Picture taken on February 9, 2017. REUTERS/Rick Wilking

A computer image of the foot impressions of Ryleah Geisner, 8, is seen after she walked on a pressure sensitive floor wearing reflective and surface EMG sensors attached to her body in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. Picture taken on February 9, 2017. REUTERS/Rick Wilking

Ryleah Geisner, 8, with reflective and surface EMG sensors attached to her body, walks in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017 as a computer screen (below) displays her movements. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. Her patient number is obscured on the screen for privacy reasons. Picture taken on February 9, 2017. REUTERS/Rick Wilking

Ryleah Geisner, 8, with reflective and surface EMG sensors attached to her body, walks in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017 as a computer screen (below) displays her movements. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. Picture taken on February 9, 2017. REUTERS/Rick Wilking

Ryleah Geisner, 8, looks at a photo of herself with reflective and surface EMG sensors attached to her body with her mother Nune Karapefian (L) and Brittney Martz, clinical therapy aide (R) and Joanna Roybal, physical therapist (2nd R) before walking in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. Picture taken on February 9, 2017. REUTERS/Rick Wilking

Ryleah Geisner, 8, has reflective and surface EMG sensors attached to her body, before walking in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. Picture taken on February 9, 2017. REUTERS/Rick Wilking

Ryleah Geisner, 8, with reflective and surface EMG sensors attached to her body, walks in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. Picture taken on February 9, 2017. REUTERS/Rick Wilking

Ryleah Geisner, 8, looks at a computer image of her foot impressions after walking on a pressure sensitive floor wearing reflective and surface EMG sensors attached to her body in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. Picture taken on February 9, 2017. REUTERS/Rick Wilking

The gait and pressure of her steps is seen as Ryleah Geisner, 8, with reflective and surface EMG sensors attached to her body walks in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. Picture taken on February 9, 2017. REUTERS/Rick Wilking

Ryleah Geisner, 8, with reflective and surface EMG sensors attached to her body, walks in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017 as a computer screen (right) displays her movements. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. Picture taken on February 9, 2017. REUTERS/Rick Wilking

Nune Karapefian (R) talks with staff as her daughter Ryleah Geisner, 8, looks over a toy she picked out after she walked with reflective and surface EMG sensors attached to her body in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. At center is Joanna Roybal, physical therapist and left is Brittney Martz, clinical therapy aide. Picture taken on February 9, 2017. REUTERS/Rick Wilking

The gait is seen on a computer monitor as Ryleah Geisner, 8, with reflective and surface EMG sensors attached to her body walks in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. Picture taken on February 9, 2017. REUTERS/Rick Wilking

Ryleah Geisner, 8, laughs as she looks at a computer image of herself walking with reflective and surface EMG sensors attached to her body in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017 with lab engineer Kayla Burnim (R.) Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. In the background is Ryleah's grandmother Sandy Geisner. Picture taken on February 9, 2017. REUTERS/Rick Wilking

Nune Karapefian (L) talks with staff after her daughter Ryleah Geisner, 8, walked with reflective and surface EMG sensors attached to her body in the Center for Gait and Movement Analysis lab at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. At center is Joanna Roybal, physical therapist, and right is Kayla Burnim, gait lab engineer. Picture taken on February 9, 2017. REUTERS/Rick Wilking

Ryleah Geisner, 8, with reflective and surface EMG sensors on her body, is prepared to walk in the Center for Gait and Movement Analysis lab with Brittney Martz, a clinical therapy aide at Children's Hospital Colorado in Aurora, Colorado, U.S., February 9, 2017. Ryleah has cerebral palsy, a congenital disorder of movement, muscle tone, or posture. The lab was using 3-D motion capture technology to analyze Ryleah's body movement and muscle activity while walking and that data will then be used to formulate a treatment plan for her. Picture taken on February 9, 2017. REUTERS/Rick Wilking