Was watching a clip from utube where a former pilot wanted to know how fast the hornet could go, in the books he said the hornet could go as fast as 1.8 mach. Than he said he couldn't find out since the flight training was structured and couldn't find out. But when he went to the fleet squadron he found out one of his sortie he could go to a area and do what ever he liked to do. So he went out to 30 to 40 thousand feet and went as fast as 1.2 mach but couldnt get to 1.8. So he thought surely if i bullesyed the earth i could get to 1.8. But he said that the speed decreased and couldnt get to 1.8. Reason being he went into thicker air