ZCZC JA57 081447 UTC MAY 26 VARNA RADIO NAVWARN 254/26 E OF CHERNY NOS.*AVY*TRAINING. ARTILLERY FIRING FM 0700 TO 1000 UTC ON 12 AND 13 MAY 2026 IN REGION: 43 01.3N 028 11.4E 43 00.0N 028 16.9E 42 55.0N 028 16.9E 42 53.** 028 10.2E 42 59.4N 028 10.2E TEMPORARILY DANGEROUS FOR NAVIGATION. NNNN