The new way to fight a war is here: unmanned medium to high altitude, long endurance aircraft (armed with a suite of weapons)
The Predator MQ-1B (photo above) has as its primary mission the interdiction and conducting armed reconnaissance against critical, perishable targets. When the MQ-1 is not actively pursuing its primary mission, it acts as the Joint Forces Air Component Commander-owned theater asset for reconnaissance, surveillance and target acquisition in support of the Joint Forces commander.
The Reaper MQ-9 is a larger and more capable version of the MQ-1B and carries synthetic aperture radar which will enable it to target joint direct attack munitions (JDAM).
The video demonstrates how they are flown and the methods used to attack ground targets: