SAN FRANCISCO, CA - OCTOBER 7: United Airlines Boeing 747 demonstration during 2011 San Francisco Fleet Week on October 7, 2010  in San Francisco, CA.
Editorial use only
Editorial credit: Anatoliy Lukich / Shutterstock.com

Royalty-free stock photo ID: 90466042

SAN FRANCISCO, CA - OCTOBER 7: United Airlines Boeing 747 demonstration during 2011 San Francisco Fleet Week on October 7, 2010 in San Francisco, CA.