Download article as PDF Photo: © European Defence Agency A total of 23 air assets and some 750 military personnel from eight countries – Austria, Belgium, Czechia, the Netherlands, Slovakia, Slovenia, Switzerland and Portugal – participated in Hot Blade 2023, hosted by the Portuguese Air Force. In addition, Greece and Italy sent exercise observers. The air assets comprised 13 helicopters and 10 fixed wings, including training and transport aircrafts and fast jets.