U.S. President Joe Biden delivers remarks on infrastructure investments at the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst 

U.S. President Joe Biden delivers remarks on infrastructure investments at the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst 

U.S. President Joe Biden looks down before delivering remarks on infrastructure investments at the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst TPX IMAGES OF THE DAY 

U.S. President Joe Biden delivers remarks on infrastructure investments at the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst 

U.S. President Joe Biden interacts with a person as he tours the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst 

U.S. President Joe Biden receives explanations as he tours the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst 

U.S. President Joe Biden talks to a person as he tours the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst 

Supporters of former U.S. President Donald Trump demonstrate as U.S. President Joe Biden's motorcade arrives at the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. Picture taken trough a vehicle window. REUTERS/Jonathan Ernst 

U.S. President Joe Biden receives explanations as he tours the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst 

Supporters of former U.S. President Donald Trump demonstrate as U.S. President Joe Biden's motorcade arrives at the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst 

Supporters of former U.S. President Donald Trump demonstrate as U.S. President Joe Biden's motorcade arrives at the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst 

Supporters of former U.S. President Donald Trump demonstrate as U.S. President Joe Biden's motorcade arrives at the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst 

U.S. President Joe Biden talks to a person as he tours the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst 

U.S. President Joe Biden talks to a person as he tours the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst 

U.S. President Joe Biden talks to a person as he tours the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst 

U.S. President Joe Biden talks to a person as he tours the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst 

Supporters of former U.S. President Donald Trump demonstrate as U.S. President Joe Biden's motorcade arrives at the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst 

Supporters of former U.S. President Donald Trump demonstrate as U.S. President Joe Biden's motorcade arrives at the International Union of Operating Engineers Local 324 training facility in Howell, Michigan, U.S. October 5, 2021. REUTERS/Jonathan Ernst 

Senegalese agricultural engineer Aly Ndiaye, who is the head of the training and green sectors division at the eco-villages department of the Senegalese Agency for Reforestation and the Great Green Wall, waters trees at a newly built Tolou Keur garden, in Boki Diawe, within the Great Green Wall area, Matam region, Senegal, July 10, 2021. Gardens known as 'Tolou Keur' hold plants and trees resistant to hot, dry climates, and are planted with circular beds that allow roots to grow inwards, trapping liquids and bacteria and improving water retention and composting. Ndiaye stressed the importance of "smaller actions that are permanent". "A thousand Tolou Keur is already 1.5 million trees," said Ndiaye. "So if we start, we can make a lot." REUTERS/Zohra Bensemra SEARCH "BENSEMRA REFORESTATION" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

Arisa Tsubata, 27, a nurse and a boxer, turns on her car's engine on as she leaves Tajima boxing gym after training at night in Sayama, Saitama Prefecture, Japan, April 22, 2021. Tsubata has trained around her work shifts for over a year to prepare for a final Olympic boxing qualifier in the hope of making it to the Tokyo Games this summer. That dream was shattered earlier this year after the International Olympic Committee (IOC) decided to cancel the boxing qualifiers due to take place in June and to allocate spots based on the rankings of recent years instead. REUTERS/Kim Kyung-Hoon SEARCH "NURSE BOXER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

U.S. Democratic presidential candidate and former Vice President Joe Biden stands with union leaders as he tours an operating engineers training facility during a campaign stop in New Alexandria, Pennsylvania, U.S., September 30, 2020. REUTERS/Mike Segar 

U.S. Democratic presidential candidate and former Vice President Joe Biden is seen through a window as he speaks to union workers after touring an operating engineers training facility during a campaign stop in New Alexandria, Pennsylvania, U.S., September 30, 2020. REUTERS/Mike Segar 

U.S. Democratic presidential candidate and former Vice President Joe Biden speaks to union workers after touring an operating engineers training facility during a campaign stop in New Alexandria, Pennsylvania, U.S., September 30, 2020. REUTERS/Mike Segar TPX IMAGES OF THE DAY 

U.S. Democratic presidential candidate and former Vice President Joe Biden speaks to union workers after touring an operating engineers training facility during a campaign stop in New Alexandria, Pennsylvania, U.S., September 30, 2020. REUTERS/Mike Segar 

U.S. Democratic presidential candidate and former Vice President Joe Biden tours an operating engineers training facility during a campaign stop in New Alexandria, Pennsylvania, U.S., September 30, 2020. REUTERS/Mike Segar 

A U.S. Forest Service officer wears a patch on his uniform as he watches U.S. Marines and Sailors from the 7th Engineer Support Battalion train with professional wildland firefighters at Camp Pendleton, California, U.S., September 18, 2020. REUTERS/Mike Blake 

U.S. Marines and Sailors with 7th Engineer Support Battalion from Camp Pendleton wear new gear as they train with professional wildland firefighters in preparation to support the National Interagency Fire Center to protect people, property and public lands before deploying to help fight fires in California from Camp Pendleton, California, U.S., September 18, 2020. REUTERS/Mike Blake 

U.S. Marines and Sailors with 7th Engineer Support Battalion from Camp Pendleton learn to deploy fire shelters as they train with professional wildland firefighters in preparation to support the National Interagency Fire Center to protect people, property and public lands before deploying to help fight fires in California from Camp Pendleton, California, U.S., September 18, 2020. REUTERS/Mike Blake 

U.S. Marines and Sailors with 7th Engineer Support Battalion wear new fire fighting gear as they train with professional wildland firefighters in preparation to support the National Interagency Fire Center to protect people, property and public lands before deploying to help fight fires in California from Camp Pendleton, California, U.S., September 18, 2020. REUTERS/Mike Blake 

U.S. Marines and Sailors with 7th Engineer Support Battalion from Camp Pendleton train with professional wildland firefighters in preparation to support the National Interagency Fire Center to protect people, property and public lands before deploying to help fight fires in California from Camp Pendleton, California, U.S., September 18, 2020. REUTERS/Mike Blake 

U.S. Marines and Sailors with 7th Engineer Support Battalion from Camp Pendleton learn to deploy fire shelters as they train with professional wildland firefighters in preparation to support the National Interagency Fire Center to protect people, property and public lands before deploying to help fight fires in California from Camp Pendleton, California, U.S., September 18, 2020. REUTERS/Mike Blake 

U.S. Marines and Sailors with 7th Engineer Support Battalion from Camp Pendleton learn to deploy fire shelters as they train with professional wildland firefighters in preparation to support the National Interagency Fire Center to protect people, property and public lands before deploying to help fight fires in California from Camp Pendleton, California, U.S., September 18, 2020. REUTERS/Mike Blake 

U.S. Marines and Sailors with 7th Engineer Support Battalion from Camp Pendleton sort through their new gear as they train with professional wildland firefighters in preparation to support the National Interagency Fire Center to protect people, property and public lands before deploying to help fight fires in California from Camp Pendleton, California, U.S., September 18, 2020. REUTERS/Mike Blake 

U.S. Marines and Sailors with 7th Engineer Support Battalion wear new fire fighting gear as they train with professional wildland firefighters in preparation to support the National Interagency Fire Center to protect people, property and public lands before deploying to help fight fires in California from Camp Pendleton, California, U.S., September 18, 2020. REUTERS/Mike Blake 

U.S. Marines and Sailors with 7th Engineer Support Battalion wear new fire fighting gear as they train with professional wildland firefighters in preparation to support the National Interagency Fire Center to protect people, property and public lands before deploying to help fight fires in California from Camp Pendleton, California, U.S., September 18, 2020. REUTERS/Mike Blake 

A U.S. Marines from 7th Engineer Support Battalion from Camp Pendleton wears fire gear and new gloves as she trains with professional wildland firefighters in preparation to support the National Interagency Fire Center to protect people, property and public lands before deploying to help fight fires in California from Camp Pendleton, California, U.S., September 18, 2020. REUTERS/Mike Blake 

U.S. Marines and Sailors with 7th Engineer Support Battalion from Camp Pendleton train with professional wildland firefighters in preparation to support the National Interagency Fire Center to protect people, property and public lands before deploying to help fight fires in California from Camp Pendleton, California, U.S., September 18, 2020. REUTERS/Mike Blake 

U.S. Marines and Sailors with 7th Engineer Support Battalion wear new fire fighting gear as they train with professional wildland firefighters in preparation to support the National Interagency Fire Center to protect people, property and public lands before deploying to help fight fires in California from Camp Pendleton, California, U.S., September 18, 2020. REUTERS/Mike Blake 

U.S. Marines and Sailors with 7th Engineer Support Battalion wear new fire fighting gear as they train with professional wildland firefighters in preparation to support the National Interagency Fire Center to protect people, property and public lands before deploying to help fight fires in California from Camp Pendleton, California, U.S., September 18, 2020. REUTERS/Mike Blake 

U.S. Marines and Sailors with 7th Engineer Support Battalion wear new fire fighting gear as they train with professional wildland firefighters in preparation to support the National Interagency Fire Center to protect people, property and public lands before deploying to help fight fires in California from Camp Pendleton, California, U.S., September 18, 2020. REUTERS/Mike Blake 

An engine driver steers a SBB Re 4/4 II locomotive of Swiss railway operator SBB near the Hauptbahnhof central station, as the coronavirus disease (COVID-19) outbreak continues, in Zurich, Switzerland July 3, 2020. REUTERS/Arnd Wiegmann 

An engine driver steers a SBB Re 4/4 II locomotive of Swiss railway operator SBB near the Hauptbahnhof central station, as the coronavirus disease (COVID-19) outbreak continues, in Zurich, Switzerland July 3, 2020. REUTERS/Arnd Wiegmann 

An engine driver steers a SBB Re 4/4 II locomotive of Swiss railway operator SBB near the Hauptbahnhof central station, as the coronavirus disease (COVID-19) outbreak continues, in Zurich, Switzerland July 3, 2020. REUTERS/Arnd Wiegmann 

A Canadian National Railway (CN Rail) freight train engine remains halted while First Nations members of the Tyendinaga Mohawk Territory continue to block train tracks 2 km away as part of a protest against British Columbia's Coastal GasLink pipeline, in Tyendinaga, Ontario, Canada February 14, 2020. REUTERS/Chris Helgren 

Soldiers assigned to A Company, 326th Brigade Engineer Battalion, 101 Airborne Division (AirAssault) detonate a 40 pound demolition charge during a training exercise at Fort Campbell, Kentucky, U.S., February 12, 2020. REUTERS/Bryan Woolston 

Soldiers assigned to A Company, 326th Brigade Engineer Battalion, 101 Airborne Division (AirAssault) prepare a 40 pound demolition charge for detonation during a training exercise at Fort Campbell, Kentucky, U.S., February 12, 2020. REUTERS/Bryan Woolston 

Soldiers assigned to A Company, 326th Brigade Engineer Battalion, 101 Airborne Division (AirAssault) detonate an explosive breeching charge during a training exercise at Fort Campbell, Kentucky, U.S., February 12, 2020. REUTERS/Bryan Woolston 

Soldiers assigned to A Company, 326th Brigade Engineer Battalion, 101 Airborne Division (AirAssault) detonate a explosive breeching charge during a training exercise at Fort Campbell, Kentucky, U.S., February 12, 2020. REUTERS/Bryan Woolston 

A high speed train travelling from Milan to Bologna is seen after it derailed killing at least two people near Lodi, Italy February 6, 2020. REUTERS/Flavio Lo Scalzo 

An engine heads to the section of the plant where the drive train is added on the assembly line at the General Motors (GM) manufacturing plant in Spring Hill, Tennessee, U.S., August 22, 2019. Picture taken August 22, 2019. REUTERS/Harrison McClary 

The engine and drive train are pictured with the body on the assembly line at the General Motors (GM) manufacturing plant in Spring Hill, Tennessee, U.S., August 22, 2019. Picture taken August 22, 2019. 

An engineer works at the construction site of the future Light Rail Train (LTR) project "Al-Salam - New Administrative Capital (NAC)" to link with 10th of Ramadan and the El-Salam district in east Cairo, Egypt July 9, 2019. Picture taken July 9, 2019. REUTERS/Shokry Hussien 

Train driver Hari Chettri sits in the engine of Darjeeling Himalayan Railway steam train, which runs on a 2 foot gauge railway and is a UNESCO World Heritage Site, as it leaves Batasia Loop in Darjeeling, India, June 25, 2019. Picture taken June 25, 2019. REUTERS/Ranita Roy 

Retired railroad engineer Kent Brown, 49, of Clinton, wears a costume while waiting to tour a historic train before the 150th anniversary of the completion of the Transcontinental Railroad at Ogden Union Station in Ogden, Utah, U.S. May 9, 2019. REUTERS/Terray Sylvester 

Vikas Kamble, a 27-year-old fitter who has been unemployed for six months poses during a job fair in Chinchwad, India, February 7, 2019. "I was told that if I did this course then there would many opportunities in the industrial sector. If there is one opening then there are at least 50 trained fitters like me for applying for it." Picture taken February 7, 2019. To match Insight INDIA-ELECTION/JOBS-ENGINEERS. REUTERS/Danish Siddiqui 

U.S. President Donald Trump signs an executive order on energy and infrastructure during a campaign event at the International Union of Operating Engineers International Training and Education Center in Crosby, Texas, U.S., April 10, 2019. REUTERS/Carlos Barria 

U.S. President Donald Trump speaks as he signs an executive order on energy and infrastructure during a campaign event at the International Union of Operating Engineers International Training and Education Center in Crosby, Texas, U.S., April 10, 2019. REUTERS/Carlos Barria 

U.S. President Donald Trump displays an executive order he signed on energy and infrastructure as workers applaud at the International Union of Operating Engineers International Training and Education Center in Crosby, Texas, U.S., April 10, 2019. REUTERS/Carlos Barria 

U.S. President Donald Trump is applauded prior to signing an executive order on energy and infrastructure during a campaign event at the International Union of Operating Engineers International Training and Education Center in Crosby, Texas, U.S., April 10, 2019. REUTERS/Carlos Barria 

U.S. President Donald Trump arrives to deliver remarks and sign an executive order on energy and infrastructure at the International Union of Operating Engineers International Training and Education Center in Crosby, Texas, U.S., April 10, 2019. REUTERS/Carlos Barria