Well this is odd, and possibly concerning. A NOTAM restricting pilots from operating below 18000 ft has been issued for all of El Paso, which borders Mexico, for security reasons.This effectively shuts down El Paso's airport (KDNA) for an entire week.https://tfr.faa.gov/tfr3/?page=detail_6_2233Apparently, even El Paso's City Council has no idea why or what is going on: https://www.reddit.com/r/ADSB/comments/1r1pqnp/comment/o4rdqut/#uspol #aviation #ElPaso #Texas