That said, the FAA is grounding Falcon 9s until an investigation is completed into the explosion of a booster upon landing on a drone ship off Cape Canaveral. No estimates on length of the delay, but could be significant.The rocket currently being used is not the ones that they have been randomly blowing up in Texas though. These Falcon 9s appear to be quite reliable and predictable, enough to be able to bring back the exhausted first stage and land it vertically either on land or on a barge.