From http://members.aol.com/mkonvalin/fave/herk.htm:
"This is the YMC-130H "Credible Sport", a Herk specially modified with acceleration and deceleration rockets. This was the plane the US was planning to use for a second raid into Iran in the late 1970's to rescue the hostages. The rockets were supposed to enable it to land and then takeoff again in the soccer stadium in Teheran. You can see the acceleration rockets under the tail and behind & below the wings. The deceleration rockets are in the pods in front of the wings. There is a recently declassified video of the test-flight of this plane that shows it crashing and catching on fire when it lands. Not a successful test, but still very impressive. The US was going to build a new one, but the project was cancelled due to word that Iran was going to release the hostages."
They actually built three out of standard MC-130H's. The first aircraft crashed, the second one was demodded and returned to regular service, the third was mothballed and never flown with the bottles active. http://www.museumofaviation.org/aircraftCollection/cargo/16-ymc130h.htm