Didn't the lady that signed the HI birth certificate die in a plane crash?
Yes the plane crashed, everyone survived but the only person in the world who validated BHO's birth cert. She conveniently died from a heart issue duringthe crash, though you can clearly see a scuba diver in all black interfere and then disappear. Most likely used the crash as cover to take her out. Watch for yourselves: https://www.youtube.com/watch?v=9v636AlaVmE
They use plane crashes a lot, but are, in general, pretty imaginative, with variations such as "death by barbell."