Saigon is the largest city in Vietnam and was the national capital of the Republic of Vietnam (South Vietnam) during the Vietnam War. In 1976, following the end war, Saigon was renamed Ho Chi Minh City after the President of the Democratic Republic of Vietnam (North Vietnam).
In 1973, Major William Stryker returns to the Tan Son Nhut Air Base in Saigon, in order to appropriate a group of mutant GIs (consisting of Havok, Toad, Ink) for research conducted by Trask Industries. Mystique disguised as Colonel Sanders approached Stryker and asked on whose authority was he taking the soldiers, demanding that they be brought home immediately. In turn, Stryker questioned the Colonel's authority, prompting Mystique to revert to her true form. She dispatched Stryker and the guards with the help of the GIs, and led them to a plane to be taken back to America.
Stryker recovered from his injuries, wielding a gun, and headed out to the runway, intent on stopping the mutant GIs from leaving Saigon. However, the plane took off and Stryker stood watching it.