Based on the video info and the location in the footage the video was filmed from Mount Scott overlooking Elmer Thomas Lake located on the boundary between the Wichita Mountain Wildlife Refuge and the Fort Sill military base. The Mount Scott 'lookout' elevation, 2500 ft.
Fort Sill is the "home of the United States Army Field Artillery School as well as the Marine Corps' site for Field Artillery MOS school, United States Army Air Defense Artillery School, the 31st Air Defense Artillery Brigade, the 75th Fires Brigade and the 214th Fires Brigade. Fort Sill is also one of the four locations for Army Basic Combat Training".
Video Info:The 'flying object' in Dallas:
Published on 16 Apr 2012 by crazybreakingnews
An UFO was accidently filmed between Lake Lawtonka and Mount Scott in the Wichita Mountains near Lawton in Oklahoma on April 16, 2012. Video filmed by Simon Foreman.
It looks to be the same flying object like in Dallas two weeks ago?!
UFO over DALLAS - Filmed from Plane - 03/21/2012 Video
Camera is, how convient, set up PERFECLTY. The object (some sort or man made missle), starts off from a stationary position, PERFECTLY framed on the far right. Clearly a hoax if it's actually perputrated to be an alien craft of some sort.