U.S. Marines participate in winter training exercise in South Korea
PYEONGCHANG-GUN, SOUTH KOREA - JANUARY 28: U.S. Marines from 3rd Marine Expeditionary force deployed from Okinawa, Japan, participate in the winter military training exercise with South Korean soldiers on January 28, 2016 in Pyeongchang-gun, South Korea. U.S. and South Korean marines participate in the endurance exercise in temperature below minus 20 degrees celsius under a scenario to defend the country from any possible attacks from North Korea. (Photo by Chung Sung-Jun/Getty Images)PYEONGCHANG-GUN, SOUTH KOREA - JANUARY 28: U.S. Marines from 3rd Marine Expeditionary force deployed from Okinawa, Japan, participate in the winter military training exercise with South Korean soldiers on January 28, 2016 in Pyeongchang-gun, South Korea. U.S. and South Korean marines participate in the endurance exercise in temperature below minus 20 degrees celsius under a scenario to defend the country from any possible attacks from North Korea. (Photo by Chung Sung-Jun/Getty Images)PYEONGCHANG-GUN, SOUTH KOREA - JANUARY 28: U.S. Marines from 3rd Marine Expeditionary force deployed from Okinawa, Japan, participate in the winter military training exercise with South Korean soldiers on January 28, 2016 in Pyeongchang-gun, South Korea. U.S. and South Korean marines participate in the endurance exercise in temperature below minus 20 degrees celsius under a scenario to defend the country from any possible attacks from North Korea. (Photo by Chung Sung-Jun/Getty Images)PYEONGCHANG-GUN, SOUTH KOREA - JANUARY 28: U.S. Marines from 3rd Marine Expeditionary force deployed from Okinawa, Japan, participate in the winter military training exercise with South Korean soldiers on January 28, 2016 in Pyeongchang-gun, South Korea. U.S. and South Korean marines participate in the endurance exercise in temperature below minus 20 degrees celsius under a scenario to defend the country from any possible attacks from North Korea. (Photo by Chung Sung-Jun/Getty Images)PYEONGCHANG-GUN, SOUTH KOREA - JANUARY 28: U.S. Marines from 3rd Marine Expeditionary force deployed from Okinawa, Japan, cover themselves in snow with South Korean marines during a winter military training on January 28, 2016 in Pyeongchang-gun, South Korea. U.S. and South Korean marines participate in the endurance exercise in temperature below minus 20 degrees celsius under a scenario to defend the country from any possible attacks from North Korea. (Photo by Chung Sung-Jun/Getty Images)PYEONGCHANG-GUN, SOUTH KOREA - JANUARY 28: U.S. Marines from 3rd Marine Expeditionary force deployed from Okinawa, Japan, participate in the winter military training exercise with South Korean soldiers on January 28, 2016 in Pyeongchang-gun, South Korea. U.S. and South Korean marines participate in the endurance exercise in temperature below minus 20 degrees celsius under a scenario to defend the country from any possible attacks from North Korea. (Photo by Chung Sung-Jun/Getty Images)PYEONGCHANG-GUN, SOUTH KOREA - JANUARY 28: U.S. Marines from 3rd Marine Expeditionary force deployed from Okinawa, Japan, participate in the winter military training exercise with South Korean soldiers on January 28, 2016 in Pyeongchang-gun, South Korea. U.S. and South Korean marines participate in the endurance exercise in temperature below minus 20 degrees celsius under a scenario to defend the country from any possible attacks from North Korea. (Photo by Chung Sung-Jun/Getty Images)PYEONGCHANG-GUN, SOUTH KOREA - JANUARY 28: U.S. Marines from 3rd Marine Expeditionary force deployed from Okinawa, Japan, participate in the winter military training exercise with South Korean soldiers on January 28, 2016 in Pyeongchang-gun, South Korea. U.S. and South Korean marines participate in the endurance exercise in temperature below minus 20 degrees celsius under a scenario to defend the country from any possible attacks from North Korea. (Photo by Chung Sung-Jun/Getty Images)PYEONGCHANG-GUN, SOUTH KOREA - JANUARY 28: U.S. Marines from 3rd Marine Expeditionary force deployed from Okinawa, Japan, participate in the winter military training exercise with South Korean soldiers on January 28, 2016 in Pyeongchang-gun, South Korea. U.S. and South Korean marines participate in the endurance exercise in temperature below minus 20 degrees celsius under a scenario to defend the country from any possible attacks from North Korea. (Photo by Chung Sung-Jun/Getty Images)PYEONGCHANG-GUN, SOUTH KOREA - JANUARY 28: U.S. Marines from 3rd Marine Expeditionary force deployed from Okinawa, Japan, participate in the winter military training exercise with South Korean soldiers on January 28, 2016 in Pyeongchang-gun, South Korea. U.S. and South Korean marines participate in the endurance exercise in temperature below minus 20 degrees celsius under a scenario to defend the country from any possible attacks from North Korea. (Photo by Chung Sung-Jun/Getty Images)PYEONGCHANG-GUN, SOUTH KOREA - JANUARY 28: U.S. Marines from 3rd Marine Expeditionary force deployed from Okinawa, Japan, participate in the winter military training exercise with South Korean soldiers on January 28, 2016 in Pyeongchang-gun, South Korea. U.S. and South Korean marines participate in the endurance exercise in temperature below minus 20 degrees celsius under a scenario to defend the country from any possible attacks from North Korea. (Photo by Chung Sung-Jun/Getty Images)PYEONGCHANG-GUN, SOUTH KOREA - JANUARY 28: U.S. Marines from 3rd Marine Expeditionary force deployed from Okinawa, Japan, cover themselves in snow with South Korean marines during a winter military training on January 28, 2016 in Pyeongchang-gun, South Korea. U.S. and South Korean marines participate in the endurance exercise in temperature below minus 20 degrees celsius under a scenario to defend the country from any possible attacks from North Korea. (Photo by Chung Sung-Jun/Getty Images)
An Army working group is looking at whether some soldiers at large installations and in certain MOSs ought to be able to stay longer at the installation.