COral Reef Airborne Laboratory (CORAL) Gulfstream IV N198GS to Palau

5/5/2017 - N198GS wrkg SFO 17904, rqst 2 hrs overhead PTRO ops within 60nms of PTRO. N198GS PTYA-PTRO RTN PTYA GLF4 SEL/BPHQ.

NASA Surveying Coral Reef Link:
https://www.nasa.gov/content/earth-expeditions-coral

File Picture - N198GS GLF4.