Passage: On the night of 19 July 1915, large fires were discovered underneath the fore main battery turret, the third to flare up on an American battleship in less than a month. However, by 22 July, the Navy believed that the Oklahoma fire had been caused by "defective insulation" or a mistake made by a dockyard worker. The fire delayed the battleship's completion so much that Nevada was able to conduct her sea trials and be commissioned before Oklahoma. On 23 October 1915, she was 98.1 percent complete. She was commissioned at Philadelphia, on 2 May 1916, with Captain Roger Welles in command.

Question: On May 2nd, 1916, who was in command of the Nevada?
Captain Roger Welles