http://en.wikipedia.org/wiki/Lockheed_Martin_KC-130

Harvest HAWK

With the addition of the Marine Corps's ISR / Weapon Mission Kit, the KC-130J will be able to serve as an overwatch aircraft and can deliver ground support fire in the form of Hellfire missiles, precision-guided bombs, and eventually 30mm cannon fire in a later upgrade.^[6] This capability, designated as "Harvest HAWK" (Hercules Airborne Weapons Kit), can be used in scenarios where precision is not a requisite, such as area denial.^[7]

The AN/AAQ-30 Targeting Sight System (TSS) integrates an infrared and television camera, and is mounted under the left wing's external fuel tank. The typical loadout is four Hellfire missiles and 10 Griffen GPS guided missiles.^[8] The weapons systems operator uses a Fire Control Console mounted on a standard cargo pallet in the KC-130J’s cargo compartment.^[9]

The USMC plans to acquire a 3 kits per active-duty KC-130J squadron for a total of 9 kits, each costing up to $22 million.^[10] It was first test flown on August 29, 2009 by VX-20, and first deployed in October 2010 with VMGR-352 (see Operational history).