Shuttle call in red alert will only take six minutes instead of ten

If the shuttle is called in a red alert the time will only be six minutes.
This is separated into three minutes of recall time and three minutes of
centcom preparing the shuttle and sending it.
Merge commit 'fetch_head' into red-alert-shuttle-call
Merge pull request #1311 from JJRcop/red-alert-shuttle-call

Shuttle call in red alert will only take six minutes instead of ten