The maintenance availability for the Los Angeles-class attack submarine Boise (SSN-764) is delayed until 2020 due to shipyard backlogs, despite previous plans for the vessel to reach a dry dock this past January. Navy acquisition chief Hondo Geurts told the House Armed Services seapower and projection forces subcommittee yesterday three Navy submarines, including Boise, are sitting idle, waiting for maintenance availabilities in shipyards. "The challenge with Boise has been delays we've seen with the other submarines in the private yard...