United States Air Force Thunderbirds and the United States Navy Blue Angels fly over the White House during the "Salute to America" event hosted by U.S. President Donald Trump to celebrate Fourth of July Independence Day in Washington, U.S., July 4, 2020. REUTERS/Sarah Silbiger

United States Air Force Thunderbirds and the United States NavyBlue Angels fly over the White House during the "Salute to America" event hosted by U.S. President Donald Trump to celebrate Fourth of July Independence Day in Washington, U.S., July 4, 2020. REUTERS/Sarah Silbiger

U.S. President Donald Trump and first lady Melania Trump watch a U.S. Air Force B2 Stealth Bomber flyover while hosting a 4th of July "2020 Salute to America" to celebrate the U.S. Independence Day holiday on the South Lawn of the White House in Washington, U.S., July 4, 2020. REUTERS/Carlos Barria

Supporters of U.S. President Donald Trump wave flags as a U.S. Air Force B-52 bomber flies during Independence Day celebrations in Washington, U.S., July 4, 2020. REUTERS/Joshua Roberts

U.S. President Donald Trump and first lady Melania Trump wave at Air Force One as it flies overhead while they host a 4th of July "2020 Salute to America" to celebrate the U.S. Independence Day holiday on the South Lawn of the White House in Washington, U.S., July 4, 2020. REUTERS/Carlos Barria

Air Force One flies over the "Salute to America" event hosted U.S. President Donald Trump for the Fourth of July Independence Day at the White House in Washington, U.S., July 4, 2020. REUTERS/Sarah Silbiger

The Air Force Thunderbirds fly over the "Salute to America" event hosted the U.S. President Donald Trump for the Fourth of July Independence Day at the White House in Washington, U.S., July 4, 2020. REUTERS/Sarah Silbiger

U.S. President Donald Trump and first lady Melania Trump wave up at Air Force One as it flies overhead while they host a 4th of July "2020 Salute to America" to celebrate the U.S. Independence Day holiday on the South Lawn of the White House in Washington, U.S., July 4, 2020. REUTERS/Carlos Barria

The U.S. Air Force F-22 fighter jets fly in formation during a flyover of military aircraft down the Hudson River and New York Harbor past York City, and New Jersey, U.S. July 4, 2020. REUTERS/Mike Segar

The U.S. Air Force Thuderbirds demonstration team of F-16 fighter jets perform during a flyover of military aircraft down the Hudson River and New York Harbor past York City, and New Jersey, U.S. July 4, 2020. REUTERS/Mike Segar

A U.S. Air Force B-2 Spirit Stealth Bomber (C) is flanked by 4 U.S. Marine Corps F-35 fighters during a flyover of military aircraft down the Hudson River and New York Harbor past York City, and New Jersey, U.S. July 4, 2020. REUTERS/Mike Segar

The U.S. Air Force Thuderbirds demonstration team of F-16 fighter jets perform during a flyover of military aircraft down the Hudson River and New York Harbor past York City, and New Jersey, U.S. July 4, 2020. REUTERS/Mike Segar TPX IMAGES OF THE DAY

A U.S. Air Force B-2 Spirit Stealth Bomber (C) is flanked by 4 U.S. Marine Corps F-35 fighters during a flyover of military aircraft down the Hudson River and New York Harbor past York City, and New Jersey, U.S. July 4, 2020. REUTERS/Mike Segar

U.S. President Donald Trump and first lady Melania Trump descend from Air Force One following a trip from South Dakota, at Joint Base Andrews in Maryland, U.S. July 4, 2020. REUTERS/Tom Brenner

U.S. President Donald Trump and first lady Melania Trump descend from Air Force One following a trip from South Dakota, at Joint Base Andrews in Maryland, U.S. July 4, 2020. REUTERS/Tom Brenner

Air Force One is seen next to U.S. Navy Blue Angels F/A-18 Hornet jets on the tarmac of Ellsworth Air Force Base, South Dakota, U.S., July 3, 2020. REUTERS/Tom Brenner

U.S. President Donald Trump looks at U.S. Air Force B-1B Lancer bombers during an aerial flypast as he and first lady Melania Trump attend South Dakota's U.S. Independence Day Mount Rushmore fireworks celebrations at Mt. Rushmore in Keystone, South Dakota, U.S., July 3, 2020. REUTERS/Tom Brenner

Tiffany Trump, daughter of U.S. President Donald Trump and her boyfriend Michael Boulos arrive at Ellsworth Air Force Base, South Dakota, U.S., July 3, 2020. REUTERS/Tom Brenner

U.S. President Donald Trump and first lady Melania Trump disembark Air Force One as they arrive at Ellsworth Air Force Base, South Dakota, U.S., July 3, 2020. REUTERS/Tom Brenner

Tiffany Trump, daughter of U.S. President Donald Trump and her boyfriend Michael Boulos arrive at Ellsworth Air Force Base, South Dakota, U.S., July 3, 2020. REUTERS/Tom Brenner

Tiffany Trump, daughter of U.S. President Donald Trump and her boyfriend Michael Boulos arrive at Ellsworth Air Force Base, South Dakota, U.S., July 3, 2020. REUTERS/Tom Brenner

Tiffany Trump, daughter of U.S. President Donald Trump and her boyfriend Michael Boulos arrive at Ellsworth Air Force Base, South Dakota, U.S., July 3, 2020. REUTERS/Tom Brenner

South Dakota Governor Kristi Noem and officials wait for U.S. President Donald Trump and first lady Melania Trump at Ellsworth Air Force Base, South Dakota, U.S., July 3, 2020. REUTERS/Tom Brenner

U.S. President Donald Trump and first lady Melania Trump are greeted by South Dakota Governor Kristi Noem and Senator John Thune (R-SD) as they arrive at Ellsworth Air Force Base, South Dakota, U.S., July 3, 2020. REUTERS/Tom Brenner

U.S. President Donald Trump and first lady Melania Trump are greeted by South Dakota Governor Kristi Noem and Senator John Thune (R-SD) as they arrive at Ellsworth Air Force Base, South Dakota, U.S., July 3, 2020. REUTERS/Tom Brenner

U.S. President Donald Trump and first lady Melania Trump disembark Air Force One as they arrive at Ellsworth Air Force Base, South Dakota, U.S., July 3, 2020. REUTERS/Tom Brenner

U.S. President Donald Trump and first lady Melania Trump disembark Air Force One as they arrive at Ellsworth Air Force Base, South Dakota, U.S., July 3, 2020. REUTERS/Tom Brenner

U.S. President Donald Trump walks away to board Air Force One for travel to U.S. Independence Day fireworks celebrations at Mount Rushmore in South Dakota after talking to reporters at Andrews Air Force Base in Maryland, U.S. July 3, 2020. REUTERS/Tom Brenner

U.S. President Donald Trump walks towards reporters before boarding Air Force One for travel to U.S. Independence Day fireworks celebrations at Mount Rushmore in South Dakota from Andrews Air Force Base in Maryland, U.S. July 3, 2020. REUTERS/Tom Brenner

U.S. President Donald Trump speaks to reporters before boarding Air Force One for travel to U.S. Independence Day fireworks celebrations at Mount Rushmore in South Dakota from Andrews Air Force Base in Maryland, U.S. July 3, 2020. REUTERS/Tom Brenner

U.S. President Donald Trump speaks to reporters before boarding Air Force One for travel to U.S. Independence Day fireworks celebrations at Mount Rushmore in South Dakota from Andrews Air Force Base in Maryland, U.S. July 3, 2020. REUTERS/Tom Brenner

U.S. President Donald Trump walks towards reporters before boarding Air Force One for travel to U.S. Independence Day fireworks celebrations at Mount Rushmore in South Dakota from Andrews Air Force Base in Maryland, U.S. July 3, 2020. REUTERS/Tom Brenner

U.S. President Donald Trump waves as he boards Air Force One for travel to U.S. Independence Day fireworks celebrations at Mount Rushmore in South Dakota from Andrews Air Force Base in Maryland, U.S. July 3, 2020. REUTERS/Tom Brenner

U.S. President Donald Trump talks to reporters as he boards Air Force One for travel to U.S. Independence Day fireworks celebrations at Mount Rushmore in South Dakota from Andrews Air Force Base in Maryland, U.S. July 3, 2020. REUTERS/Tom Brenner

A member of Israeli forces aims his weapon towards Palestinian demonstrators during a protest against Israel's plan to annex parts of the Israeli-occupied West Bank, in Kafr Qaddum near Nablus July 3, 2020. REUTERS/Mohamad Torokman

Palestinian demonstrators gather in front of Israeli forces during a protest against Israel's plan to annex parts of the occupied West Bank, Asira ash-Shamaliya near Nablus July 3, 2020. REUTERS/Raneen Sawafta

A member of Israeli forces prevents a Palestinian farmer riding a donkey from passing during a protest against Israel's plan to annex parts of the occupied West Bank, in Asira ash-Shamaliya near Nablus July 3, 2020. REUTERS/Raneen Sawafta

A demonstrator holds a Palestinian flag in front of Israeli forces during a protest against Israel's plan to annex parts of the occupied West Bank, in Asira ash-Shamaliya near Nablus July 3, 2020. REUTERS/Raneen Sawafta

A member of Israeli forces fires a weapon towards Palestinians during a protest against Israel's plan to annex parts of the Israeli-occupied West Bank, in Kafr Qaddum near Nablus July 3, 2020. REUTERS/Mohamad Torokman

U.S. Assistant Secretary for Health Admiral Brett P. Giroir talks with Pentagon Supply Chain Stabilization Task Force Vice Director of Logistics Rear Admiral John Polowczyk at the start of a House Select Subcommittee on the Coronavirus Crisis hearing on "The Administration Response to Ongoing Shortages of PPE and Critical Medical Supplies" on Capitol Hill in Washington, U.S., July 2, 2020. REUTERS/Kevin Lamarque/Pool

Former Prince George's County, Maryland police Corporal Michael Brown holds a training session on the use of force for special police recruits at his "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

Former Prince George's County, Maryland police Corporal Michael Brown holds a training handgun as he conducts use of force training with special police recruits at his "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

Special police recruits study police use of force guidelines during training at the "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

Former Prince George's County, Maryland police Corporal Michael Brown holds a training session on the use of force for special police recruits at his "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

Special police recruits study police use of force guidelines during training at the "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

Former Prince George's County, Maryland Police Department Corporal Michael Brown demonstrates police tactics while holding a training handgun as he conducts use of force training with special police recruits at his "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

A special police recruit holds a training handgun during use of force training at the "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

Former Prince George's County, Maryland police Corporal Michael Brown demonstrates restraint techniques as he conducts use of force training with special police recruits at his "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

Former Prince George's County, Maryland Police Department Corporal Michael Brown conducts use of force training with special police recruits at his "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

A special police recruit reads police use of force guidelines during a use of force training session with recruits at the "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

The entrance to the "Reality-Based Training Group," which trains recruits for special police, security guard and other law enforcement jobs in police tactics and the use of force, is seen in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

Training ammunition is seen in a bowl on a table during use of force training for special police recruits at the "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

Former Prince George's County, Maryland Police Corporal Michael Brown holds a copy of a "Use of Force Incident Report" form as he conducts use of force training with special police recruits at his "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

The Washington Metropoltan Police Department's general order on the use of force is seen on a table during use of force training with special police recruits at his "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

Special police training recruits attend use of force training at the "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

Prince George's County Police Department Lieutenants Sonya Zollicoffer and Thomas Boone speak about their lawsuit against the PG County police department in which they and 10 other minority officers alleged systemic racism in the police force, as they meet with journalists in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

Former Prince George's County Police Department Corporal Michael Brown speaks about his lawsuit against the PG County police department in which he and 11 other minority officers alleged systemic racism in the police force, as he meets with journalists at his "Reality-Based Training Group" where he trains police and security guard recruits in the use of force in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

A special police training recruit takes notes during use of force training at the "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

Former Prince George's County, Maryland Police Department Corporal Michael Brown displays the Washington Metropoltan Police Department's general order on the use of force as he conducts use of force training with special police recruits at his "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy

A special police recruit reads a section of the Washington Metropoltan Police Department's general order on the use of force detailing recommended precautions to allow detainees the ability to breath during a use of force training session with special police recruits at the "Reality-Based Training Group" in Hyattsville, Maryland, U.S., June 22, 2020. Picture taken June 22, 2020. REUTERS/Michael A. McCoy