Blast Off!

Watch what happened at 43:52 in @NASA’s broadcast: Launch Coverage of NASA/SpaceX Historic Mission to Space Station

https://www.pscp.tv/w/caFdfjFXZ0tnRFZadm1YanZ8MW1ueGVRZ1ZYcG94WEBbcuOHg7_A3zWEXmz6wZmyvnwYl_GRw6ck1YGskIr4?t=43m52s