It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
originally posted by: darksidius
a reply to: penroc3
Sure mach 20 in the atmosphere is a Madness at the limit of the impossible , mach 6 is more of the range of possibility.