America's F-35 stealth fighters are going to be flying less as costs soar, watchdog finds

• The US military's F-35 program is very expensive — and beset with challenges.
• A new watchdog report found that the lifetime cost for the stealth fighter has topped $2 trillion.
• The jet's availability has decreased, and the Pentagon also plans to use it less.

The US military is cutting future flight hours for the F-35 — already not available as often as it should be — as the program's price tag grows, a new watchdog report revealed this week.