During the 2022 Battle of Mariupol, approximately three thousand Ukrainian defenders, vastly outnumbered by Russian forces, were quickly surrounded in a steel plant with their backs to the Sea of Azov and little hope of anyone coming to their rescue. Running out of ammunition, short of medicine, and with casualties mounting, they were in desperate need of resupply. A bold plan was conceived, which would involve risky helicopter flights to the besieged defenders. In this episode, John Spencer is joined by retired Colonel Liam Collins. Together, they discuss their research in Ukraine and what they learned about these resupply operations during the battle.