The bill includes about $800 billion to make incremental upgrades to existing weapons near the end of their usable life spans, and about $400 billion for modernization efforts like the new Northrop Grumman ( NOC ) B-21 bomber. The total figure is actually $1.7 trillion with inflation included, noted Tom Collina, director of policy at the Ploughshares Fund, which is focused on reducing nuclear weapons. The massive cost estimate for the nuclear force comes as the Defense Department faces other big-ticket priorities such as Lockheed's F-35 and pushing the Navy's fleet back above 300 ships.