3 ms·Exactly, thats why military can not and does't use airplanes ;).by Vitaly 16y agoExactly, thats why military can not and does't use airplanes ;).crux_ 16y agoIf you don't care about being detected, why not just use a boat?BCM43 16y agoPerhaps because these can go faster, or deep enough that they can't be detected nearly as easily?