From the Huffington Post (via McClatchy Newspapers from 1996):
“McCain stopped, glared at her, raised his left arm ready to strike her, composed himself and pushed the wheelchair away from him,” according to Eleanor Apodaca, the sister of an Air Force captain missing since 1967.
We do know that McCain was furious at those still pursuing answers to POW/MIA questions. This is a new and shocking revelation. Our tough guy hero attacking a woman in a wheelchair???