Rads are explained on page 13 of the quickstart: Each hit causes 1 Rad instead of a normal hit. At the end of cooldown all units take hits equal to their Rad value. **They then halve their Rad value, rounding up**... 1 Rad / 2 = 0.5 ... Rounded up = 1 Does 1 Rad decay to 0, or remain at 1 forever?