Boston Patrol Coast Guard Maritime Safety and Security Team Boston patrols the city's waterfront in a 25-foot response boat, April 18, 2016, the day of the Boston Marathon. The Coast Guard increased its security presence in the city for the event. Coast Guard photo by Petty Officer 3rd Class Andrew Barresi SHARE: Download: Full Size (0.54 MB) Credit: Petty Officer 3rd Class Andrew B VIRIN: 160418-G-SI450-007A.JPG Photo Gallery