Developed by World War II veterans in the mid-1940s, wheelchair basketball is one of the premier events in the Paralympic Games, which are for athletes with physical disabilities and held in conjunction with the Summer Olympics. Rules are similar to able-bodied collegiate ball, but are modified to include the wheelchair. It's also one of the two team sports at the Department of Defense's annual Warrior Games that showcase the athletic abilities of the nation's injured, wounded, and ill service members and veterans.