(U.S. Air Force graphic/Corey Parrish) Airman 1st Class Tracy Barnhill, 137th Maintenance Group surveys the damage of her mother’s house after devastating tornado hit the homes of those living in Moore, Okla., May 20, 2013. (U.S. Air Force photo by Senior Airman Mark Hybers) A United States flag flies from the ruble of a home destroyed in Moore, Okla. A powerful EF-5 tornado touched down approximately three miles south of Tinker AFB. (U.S. Air Force photo by Maj. Jon Quinlan) The path of a recent tornado in Moore, Okla., May 22, 2013. A tornado categorized as an EF5, the strongest category possible, with winds ranging from 200 to 210 mph struck Moore on May 20, 2013. The Oklahoma Office of the Chief Medical Examiner reports 24 fatalities related to Monday's storms. (U.S. Air Force photo by Tech. Sgt. Bradley C. Church) Oklahoma National Guard soldiers and airmen respond to a devastating tornado that ripped through Moore, Okla., May 20, 2013. (Photo by Sgt. 1st Class Kendall James) A twisted up sign from SW 6th and Telephone Road landed in the front yard of 137th Air Refueling Wing Oklahoma Air National Guard member, Master Sgt. Cherry Bina. Bina’s house was destroyed during the massive tornado that ripped through Moore Okla., on May 20, 2013. (U.S. Air Force photo by Senior Airman Mark Hybers) A military member cuts trees that were brought down on homes after a tornado hit the town of Moore, Okla. May 20, 2013. (U.S. Air Force photo by Maj. Jon Quinlan) A United States flag hangs from a home devastated by a tornado that hit the town of Moore; Okla. May 20; 2013 near Tinker Air Force Base. (U.S. Air Force photo by Maj. Jon Quinlan) The Moore Medical Center – Norman Regional Hospital in Moore Okla., is ripped apart by the massive tornado on May 20, 2013. The hospital was directly in the path of the 1.3 mile wide tornado that hit Moore in the late afternoon. There were no casualties reported. Cars flipped over and piled on top of one another along with cars that were cleared away by first responders fill the parking lot. The Orange X spray painted on the cars indicates that the vehicle was checked and cleared of any victims. (U.S. Air Force photo by Senior Airman Mark Hybers) An Air Force member moves through a neighborhood looking for people in need of help in the aftermath of the devastating tornado that ripped through Moore Okla., Monday May 20, 2013. One of the hundreds of Oklahomans to lose their homes is being interviewed as the Airman watches for downed power lines and debris. (U.S. Air Force photo by Senior Airman Mark Hybers) The destruction is massive as the EF-5 tornado that hit May 20, 2013 will be one of the most costly in U.S. history. (U.S. Air Force photo by Senior Airman Mark Hybers) Cars in front of the Moore, Okla. Medical Center show the destruction of the EF-5 Tornado that hit, May 20. The Orange X spray painted on the cars indicates that the vehicle was checked and cleared of any victims. (U.S. Air Force photo by Senior Airman Mark Hybers) The path of a recent tornado in Moore, Okla., May 22, 2013. A tornado categorized as an EF5, the strongest category possible, with winds ranging from 200 to 210 mph struck Moore on May 20, 2013. The Oklahoma Office of the Chief Medical Examiner reports 24 fatalities related to Monday's storms. (U.S. Air Force photo by Tech. Sgt. Bradley C. Church) The path of a recent tornado in Moore, Okla., May 22, 2013. A tornado categorized as an EF5, the strongest category possible, with winds ranging from 200 to 210 mph struck Moore on May 20, 2013. The Oklahoma Office of the Chief Medical Examiner reports 24 fatalities related to Monday's storms. (U.S. Air Force photo by Tech. Sgt. Bradley C. Church) Oklahoma National Guard soldiers and airmen respond to a devastating tornado that ripped through Moore, Okla., May 20, 2013. (Photo by Sgt. 1st Class Kendall James) Oklahoma National Guard soldiers and airmen respond to a devastating tornado that ripped through Moore, Okla., May 20, 2013. (Photo by Sgt. 1st Class Kendall James) Members of the Oklahoma National Guard drive down Telephone Road preparing to get into the neighborhoods devastated by the massive tornado that struck Moore Okla., on May 20, 2013. (U.S. Air Force photo by Senior Airman Mark Hybers) Oklahoma National Guard soldiers and airmen respond to a devastating tornado that ripped through Moore, Okla., May 20, 2013. (Photo by Sgt. 1st Class Kendall James) Oklahoma National Guard soldiers and airmen respond to a devastating tornado that ripped through Moore, Okla., May 20, 2013. (Photo by Sgt. 1st Class Kendall James) A United States flag flies from the ruble of a home destroyed in Moore, Okla. A powerful EF-5 tornado touched down approximately three miles south of Tinker AFB. (U.S. Air Force photo by Maj. Jon Quinlan) Oklahoma tornado relief in pictures 5/24/2013 - TINKER AIR FORCE BASE, Okla -- View the photo slide show here: www.af.mil/photos/slideshow.asp Or cycle through the photos in the upper right.