Petty Officer 1st Class Adam Witt, the executive petty officer at Coast Guard Station Crisfield, Md., performs his annual survival swim to check the integrity of their dry-suits and survival gear Wednesday, Oct. 21, 2015. To test their equipment, crews need to perform a 100-meter swim followed by five minutes of treading water. (Coast Guard photo by Petty Officer 2nd Class David R. Marin)