The last time there were two human rated vehicles on the launch pads simultaneously at Kennedy was in 2008 when Shuttles Endeavour (STS-126) was on pad 39A and Atlantis (STS-127) was on pad 39B.
The last time there were two human rated vehicles on the launch pads simultaneously at Kennedy was in 2008 when Shuttles Endeavour (STS-126) was on pad 39A and Atlantis (STS-127) was on pad 39B.