WEBVTT 00:08.000 --> 00:10.140 Airman apprentice Gary and I'm an 00:10.760 --> 00:12.816 aviation boats system mate handler . 00:15.680 --> 00:17.902 Between you and the pilot , you have to 00:17.902 --> 00:19.958 use your hands . It's the same thing 00:19.958 --> 00:22.013 with the chock and chain crew . What 00:22.013 --> 00:24.340 they contribute is the ability to 00:24.639 --> 00:26.750 convey a mutual understanding between 00:26.750 --> 00:29.239 the crew . The boat and the pilot of 00:29.239 --> 00:32.509 the aircraft so that way the pilot can 00:32.509 --> 00:34.930 land on the flight deck without causing 00:34.930 --> 00:37.330 injury to the crew , damage to the boat 00:37.330 --> 00:39.810 or the aircraft , and is able to 00:39.810 --> 00:41.921 complete the mission of both the Navy 00:41.921 --> 00:41.450 and the Marine Corps .