Jaeger indeed means "hunter". But its use as a given name in the USA is undoubtedly a transfer from the use of Jaeger as a
German surname, rather than directly from the modern
German word.
In addition to the sportswear company, famous Americans with the surname of Jaeger include the tennis player
Andrea Jaeger:
http://freenet-homepage.de/andreajaeger/
and football player
Jeff Jaeger:
http://www.hitrunscore.com/jeff-jaeger-biography.html