In message ,
Harry Andreas writes
In article , "Paul J. Adam"
wrote:

Of course, if the GPS co-ordinates are wrongly calculated, wrongly
entered, or the GPS battery fails midflight, that's a very lost
formation... with no navigators to rescue them.

Military aircraft GPS use aircraft power with transient backup, not batteries.

Assuming a fully integrated GPS, rather than a civilian handheld
attached to the glareshield as an Urgent Operational Requirement
solution pending the procurement of the fully integrated navigation
upgrade.

Life is rarely as perfect as you'd like.

--
When you have to kill a man, it costs nothing to be polite.
W S Churchill

Paul J. Adam MainBoxatjrwlynch[dot]demon{dot}co(.)uk