A.1 Airborne Science Text Updated

In A.1 The Earth Science Research Program Overview Section 5.6 Airborne Science has been expanded to clarify the requirements on proposers that utilize commercial aircraft. New text is in bold. The second paragraph now reads:

Aircraft have proven to be of significant value in Earth system science research, particularly for investigation into atmospheric processes. NASA makes use of several existing aircraft, including the NASA-owned DC-8, G-III, ER-2, P-3B, and Global Hawk, as well as several independently owned aircraft, including, but not limited to, those operated by other Federal agencies and commercial aircraft providers. Proposers that utilize commercial aircraft service providers must ensure real time position tracking of the aircraft and provide flight reports after the completion of flights. Information regarding the utilization and reporting requirements of airborne assets to support proposals can be found at https://airbornescience.nasa.gov/.