PORTSMOUTH, Va., - Petty Officer 3rd Class Joshua Angelica, a machinery technician, conducts a fire watch while the Coast Guard Cutter Northland undergoes maintenance Thursday, August 3, 2012. The person standing firewatch monitors hot work sites to ensure conditions do not change when combustible materials can't be effectively removed, protected or shielded. U.S. Coast Guard photo by Petty Officer 2nd Class Walter Shinn.