Changes into

When its hit points run out it becomes Military Footlocker (Open).

Drops when destroyed

When it collapses

Falling, it leaves Wood Debris (Terrain) (75% of the time) where it lands.

Loot

Holds the Military Chest loot container: 6 × 2 slots, 76 possible items.

Chance of at least one per open at loot stage 50. Every item and stage.

Where to find (4 POIs)

Haven Hotel (tier 5), Navezgane High School (tier 4), NDC Checkpoint Three (tier 4), Rogue Nerds Refuge.

Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.