Instruments will be selected for testing based upon the following prioritized criteria:

Priority 1: Instrumentation that is essential to a NSF-funded or proposed field campaign.

Priority 2: Instrumentation that has recently been developed or is being modified as part of a funded NSF grant or cooperative agreement.

Priority 3: Instrumentation that has a high likelihood of being routinely used by the NSF community in future field campaigns.

Priority 4: Instrumentation that has a high likelihood of being ready for flight-testing and complies with all EOL/RAF certification guidelines (as determined by NCAR/EOL).

Priority 5: Instrumentation that is of high relevance to unmet needs in the LAOF and/or in the US airborne research fleet.