Two NP-3Ds visited Hato in January 2009 for some test work, 154589/RL-589 is seen here returning from a mission.

This Orion was delivered to the US Navy as P-3C in August 1972 and was since operated by VP-45. It was overhauled to P-3C-IIIR mod, redelivered to VP-45 but later transferred to VP-30. It was then moved to Air Test and Evaluation Squadron 1 in 2002, and redelivered to VP-30. In 2014, the Orion was modified to NP-3C and became a test laboratory with Scientific Development Squadron (VXS) 1 "Warlords" at Patuxent River. It is seen here overshooting runway 32 at its homebase.

These are inaccurate markings on this museum display. The aircraft was indeed operated at NAS Pax with the Naval Research Laboratory's (NRL) air component. In 2004 the NRL air component was formally designated a squadron, Scientific Development Squadron One VXS-1. It was given a tail code and squadron patch. Squadron's and units aboard NAS Patuxent River used to be charged with maintaining the upkeep of the Pax museum aircraft, and when the S-2D was brought in for a fresh paint job, someone decided to mark the bird up in VXS-1 markings instead of maintaining the aircraft's actual markings from it's time in service with NRL.

This P-3 served with VXS-1 before being retired to AMARG during Jan. 2013.

On display at the Naval Air Test and Evaluation Museum just outside the north gate at NAS Patuxent River.