Two US Navy reconnaissance aircraft P3 Orion flying over Pacific Northwest coastal area, from Portland to Seattle.
The Lockheed P-3 Orion is a four-engine turboprop anti-submarine and maritime surveillance aircraft developed for the United States Navy … easily distinguished from the Electra by its distinctive tail stinger or "MAD Boom", used for the magnetic detection of submarines.
P-3C BMUP {Update III Block Modification Upgrade Program} (US): 25 aircraft with interior modification to convert selected NUD/SUDS, UD2/SUDS and UD2.5/SUDS to carry ASQ-227 mission computer and ASQ-78B acoustics suite
Checking things out