Urk, the only stealth I know of is the old Microprose F-19 stealth 'sim'.
There are air dropped nukes in several games, including an addon (firepower IIRC) for CFS3, and a mod for Wings Over Europe, but neither (so far as I know) feature the B-2 or any stealth actions.
Wings Over Europe has a Vulcan though, complete with Blue Steel nuke missile
Check out Combatace for more details
