Which branch of the u. s. military operates the gps satellites orbiting the earth?

United States Air Force

Explanation:

The GPS (Global Positioning System) satellites that are orbiting the Earth were originally known as the NAVSTAR GPS. This is a radio navigation system that was originally started by the Department of Defense in 1973. The system is owned by the United States government and operated by the United States Air Force. Although the system was originally restricted to the military, it has been used by civilians since the 1980s.

explanation: we can only guess at how our actions may be perceived in the future. doing something really big like killing lots of people, saving lots of people, affecting the lives of lots of people is a sure fire way of being remembered in historical records. we can also make a difference in the history records by being a small influence on something bigger, whether that is as a civil servant, scientist or artist.

of course you could argue that we all affect history just as tiny cogs in a   bigger machine.

if you mean how do people influence our opinions of things which have already happened, then simply by writing a book which looks at things form a different perspective and trying to convince people that this perspective is more accurate or truthful. people do it all the time i.e. richard the third was a terrible or was he? plenty would disagree, it's just that their views aren't the most widely known.n:

my cultural heritage consists of irish, german, native american, and others.