Ejection fraction (EF) measures the amount of blood pumped out of your heart's lower chambers, or ventricles. It's the percentage of blood that leaves your ventricle when your heart contracts. The ...

The F-35's unique ejection seat system is designed and produced by Martin-Baker for the U.S. Military. The seat is designated US16E, and it's installed on all variants of the F-35 at a cost ...