In addition , the joint base houses `` more than 30 different units from the Army , Air Force , Navy , Marine Corps , Reserve and National Guard and Department of Defense agencies , '' the site says . Joint Base Lewis-McChord soldiers have been involved in several violent incidents . Four soldiers from the base are convicted of killing Afghan civilians in 2010 . The U.S. military has also come under fire for its treatment of detainees at Guantanamo Bay, where some prisoners were subjected to waterboarding and other harsh interrogation techniques that critics say amounted to torture.
Joint Base Lewis-McChord soldiers have been involved in several violent incidents . Four soldiers from the base are convicted of killing Afghan civilians in 2010 . The U.S. military has also come under fire for its treatment of detainees at Guantanamo Bay, where some prisoners were subjected to waterboarding and other harsh interrogation techniques that critics say amounted to torture.