Firefighters at Portsmouth Naval Shipyard train regularly for industrial blazes, but mandates after a huge submarine fire call for an annual drill that’s more extensive than anything done before. An investigation that followed the USS Miami blaze in May 2012 found that federal firefighters didn’t practice for complex and lengthy fires requiring assistance from community firefighters, according to documents obtained by The Associated Press under a Freedom of Information Act request. That’s no longer the case at Navy shipyards. The first of the new drills at Portsmouth Naval Shipyard was held in January.