Senior Airman Monica Perez, 31st Security Forces Squadron noncommissioned officer in charge of reports and analysis, smiles in a conversation during NATO’s enhanced Air Policing Allied mission at Graf Ignatievo Air Base, Bulgaria, Oct. 12, 2020. One of NATO’s roles is to preserve the integrity of allied airspace. The 31st SFS’s participation in eAP provided an opportunity for them to demonstrate comprehensive deterrence and defense through joint and combined interoperability. (U.S. Air Force photo by Airman 1st Class Ericka A. Woolever)