There are a number of Coast Guard related groups on Facebook. Bob Connelly who is active on the Coast Guard Aviation page https://www.facebook.com/groups/cgaviation/ and the Coast Guard retired page https://www.facebook.com/groups/97743292523/ sent me this listing of those including “USCGC”. https://www.facebook.com/search/results.php?q=uscgc&type=groups&init=quick&tas=0.6764054787345231