Although it appeared to be a flawless launch, there was a problem with one of the engines of the SpaceX Falcon 9. About a minute after takeoff, one of the engines detected a drop in pressure and shut down. Video posted on YouTube shows debris falling off in what some have called an explosion. SpaceX said the engine did not explode, but rather the protective fairing for the engine ruptured due to the pressure change. The other engines compensated for the failed engine, as was designed to happen if there was a problem. SpaceX had a test flight back in May, but this was the first operational space flight under the $1.6 billion contract it has with NASA to transport cargo between Earth and the space station.