In our conversation with Brig. Gen. Mariusz Ochalski, Chief of the Military Engineering Directorate of the General Command of the Armed Forces, we discuss the East Shield, the challenges connected with this project, and the progress made so far. Jędrzej Graf, Maciej Szopa: The Engineering Troops are heavily involved in the East Shield. From your perspective, what does this project look like? What is the biggest challenge today, and what are the plans for this year? Brig. General Mariusz