Air advisors polish lifesaving skills during TCCC training, leadership demo Published July 15, 2020 By Tech. Sgt. David W. Carbajal 621st Contingency Response Wing Public Affairs TRAVIS AIR FORCE BASE, Calif. -- Members of the 571st Mobility Support Advisory Squadron conducted a tactical combat casualty care training scenario July 13, 2020, outside building 381 on Travis Air Force Base, Calif. Leadership from 621st Contingency Response Wing were on hand to observe the training, as well as attended presentations from 571st MSAS air advisors on the equipment they use to train with.