SAN FRANCISCO, CA - OCTOBER 10: US Navy Demonstration Squadron Blue Angels showing precision of flying and the highest level of pilot skills during Fleet Week on October 10, 2015 in San Francisco, CA.
SAN FRANCISCO, CA - OCTOBER 5: Boeing 727 (N724YS) demonstration during Fleet Week in San Francisco, CA on October 5, 2012.
SAN FRANCISCO, CA - OCTOBER 5: United Airlines Boeing 777 (N212UA) demonstration during Fleet Week in San Francisco, CA on October 5, 2012.
