Petty Officer 3rd Class Jon Sykes and Petty Officer 1st Class Colin Rankin, maritime enforcement specialists, from Marine Safety & Security Team Boston provide security in Rowes Wharf, Boston, April 15, 2013. MSSTs possess skills, capabilities and expertise to perform a broad range of port security and harbor defense missions. U.S. Coast Guard photo by Petty Officer 3rd Class MyeongHi Clegg.