Czechoslovak government-in-exile
In London, the Czechoslovak government-in-exile resolved to kill Heydrich. Jan Kubiš and Jozef Gabčík headed the team chosen for the operation, trained by the British Special Operations Executive (SOE). They returned to the Protectorate, parachuting from a Handley Page Halifax on 28 December 1941, where they lived in hiding, preparing for the mission.