"Given this mission's GTO destination, the first stage will be subject to extreme velocities and re-entry heating, making a successful landing unlikely," SpaceX representatives wrote in a description of the JCSAT-14 mission.When the booster made it to the barge, the video cameras couldn't handle the brightness of the rocket flames and the screen went white for a second or two. The crowd apparently thought the brightness meant the booster had crashed into the ship and you could hear cries and moans of disappointment. Moments later, the video recovered and the booster could be clearly seen sitting right where it was supposed to be, residual fuel still burning. The crowd erupted in cheers, transitioning to chanting, "USA! USA! USA!". Video here.
past, SpaceX has said that to ensure the booster isn't toppled by weather or sea conditions, that once the vehicle is safe (and I don't know all that means), they will weld steel "shoes" over the booster's feet to help ensure it stays put.