In the period 8-19 June, under the leadership of the Bulgarian Air Force and the Multinational Helicopter Tactical Training Center in Portugal (MHTC), was held the exercise "Thracian Blade 2026". On 17th June 2026, a Capability Demonstration Day was held at Cheshnegirovo Airport as part of the exercise, with the participation of forces and assets from the Air Forces of Bulgaria, Austria, Belgium, Slovakia, Slovenia, Serbia, Hungary and Switzerland. The actions of the multinational helicopter formation were covered by MiG-29 and F-16 Block 70 fighters. Su-25 ground attack aircraft provided close air support, and L-39 aircraft provided close air cover, attacking targets scouted before the landing. A C-27J Spartan military transport aircraft parachuted cargo for the logistical support of the ground component.