What: USAF Lockheed C-130H Hercules
Where: Edgemont SD
When: 1 July 2012
Who: 6 aboard, 4 fatalities
Why: A C-130 transport aircraft en route to support firefighting missions crashed in South Dakota. The crew was part of the fight against the White Draw Fire.

The USAF Release said:

PETERSON AIR FORCE BASE, Colo. (AFNS) — At approximately 6 p.m. MDT July 1, a Modular Airborne Fire Fighting System equipped C-130 aircraft supporting firefighting missions crashed in the southwest corner of South Dakota. The aircraft was supporting the efforts against the White Draw Fire.

MAFFS is a self-contained aerial firefighting system owned by the U.S. Forest Service that can discharge 3,000 gallons of water or fire retardant in less than 5 seconds, covering an area one-quarter of a mile long by 100 feet wide. Once the load is discharged, it can be refilled in less than 12 minutes.

Media outlets made this update:
.CHARLOTTE NC – The crash of a North Carolina-based Air National Guard cargo plane that was fighting wildfires in South Dakota has left at least one crew member dead.The family of Lt. Col. Paul Mikeal of Mooresville confirmed they were notified early Monday that he had died in the C-130 crash on Sunday. The 42-year-old married father of two was a veteran of deployments to Iraq and Afghanistan.Lt. Col. Rose Dunlap of the 145th Airlift Wing in Charlotte says six crew members were aboard.The North Carolina Air National Guard confirmed that lives were lost in the crash. Other crew members who were injured were taken to Rapid City Regional Hospital. Names and conditions have not been released.The plane went down about 6 p.m. in the southwest corner of South Dakota where it had been dropping flame retardant on the White Draw Fire.The cause of the crash is under investigation and all other MAFFS-equipped C-130s have been grounded.