NEW : John Perry , 48 , had been a U.S. marshal for almost 10 years . ( CNN ) -- The alleged shooter , identified as Carlos Boles , was also killed . Police say he opened fire as they were trying to serve an arrest warrant . A man who allegedly shot and killed two people at the Washington Navy Yard on Thursday has been named by authorities as Aaron Alexis, according to multiple reports.
NEW : John Perry , 48 , had been a U.S. marshal for almost 10 years . The alleged shooter , identified as Carlos Boles , was also killed . Police say he opened fire as they were trying to serve an arrest warrant . A man who allegedly shot and killed two people at the Washington Navy Yard on Thursday has been named by authorities as Aaron Alexis, according to multiple reports.