Petty Officer 2nd Class Kris Grimm, an aviation survival technician at Coast Guard Sector San Diego, gives a pickup signal to be hoisted from the water to an MH-60 Jayhawk helicopter off the coast of San Diego, Jan. 12, 2016. ASTs regularly train to stay better prepared to perform rescues along the shore and open ocean. (U.S. Coast Guard photo by Petty Officer 1st Class Rob Simpson)