200429-N-ON468-1026 NORFOLK (April 29, 2020) Ruben Pena, center, a watertight door school supervisor from Commander, Naval Air Force Atlantic (CNAL) trains Sailors from the aircraft carrier USS Gerald R. Ford (CVN 78) how to properly test the balance of a watertight door onboard the ship as part of a hands-on damage control petty officer course. Ford collaborated with CNAL to develop safe and unique alternative learning environments for damage control training during the COVID-19 pandemic. (U.S. Navy photo by Mass Communication Specialist 1st Class Jeff Troutman/Released)