The problem is, theres no backup.
It was also used by astronauts on Apollo 12 when the craft was disabled by lightning.
Rogers told: If you might use GPS, its just so much more accurate.
We know there are cyber vulnerabilities.
Most of those are sold to yachtsmen who want to have a backup.
But, he added, we know there are cyber vulnerabilities.
Celestial navigation training for the fleet stopped in 2006.
Pilot programmes are also beginning for army reservists in Philadelphia, Auburn, and Rochester.
It is also good professional practice to use one navigational system to verify the accuracy of another.
The juniors were the first midshipmen to receive training this summer.
The first to graduate with the reinstated instruction would be the class of 2017.
Only three hours will be taught.
We just added the theory, but we really do have the capabilities to expand.
Mr Trogdon said the decision was fantastic.
How cool is it to go back to the ancestral technique?
source: www.techworm.net
