and damage control problems before returning to port that afternoon to provision from the storeship . Underway again on the morning of 22 February, Anderson patrolled off the entrance to Pearl Harbor and encountered a fishing craft trespassing in a security zone; lowering her motor whaleboat, Anderson investigated the craft and warned her owner to keep away from those waters. Anderson returned to Pearl Harbor the next morning, 23 February, before resuming the intensive schedule of operations with the other ships in her division that lasted through the end of February. During March 1941, Anderson continued the rapid pace of operations out of Pearl Harbor, operating with the fleet and honing her skills in antisubmarine warfare tactics and in gunnery. She also operated for a time with Yorktown as plane guard. During flight operations on the morning of 17 March 1941, two TBD Devastators from Torpedo Squadron 5 collided at and crashed into the sea, from the carrier. Yorktowns boats recovered the bodies of the pilots, but both planes sank in 2,910 fathoms (5,320 m) of water, carrying the other four men – two in each aircraft – with them. Anderson – detailed to remain in the vicinity and continue the search – found only small parts of the planes and pieces of clothing. These evolutions in Hawaiian waters proved to be the last for some time; Anderson got underway for the West Coast of the United States shortly after noon on 24 March, and reached Mare Island Navy Yard on the last day of the month after first disembarking, at San Francisco, enlisted passengers transported from Pearl Harbor. The destroyer spent all of April 1941 undergoing repairs and alterations at the West Coast yard, and on 16 May got underway for her post-repair trials. After operating briefly in San Francisco Bay, Anderson shifted to Long Beach on 21 May, and eight days later, took a departure, ostensibly, for the Hawaiian Islands, in company with her division mates, Hammann, Mustin, and Rowan. The ships soon received a change of orders. They rendezvoused with on the afternoon of 30 May, and soon proceeded down the coast, bound for Panama, as another increment of the Pacific Fleet was withdrawn to augment the Atlantic Fleet in its undeclared war with the German Navy in the Atlantic. Atlantic Neutrality Patrols Transiting the Panama Canal on the night of 8–9 June, Anderson, her hull number