 This can be done by adding more ICBMs, by increasing the number of warheads delivered by each ICBM using MIRVs, by using SLBMs (which have a much shorter flight time and are thus difficult to destroy before the terminal phase), or by a heavier reliance on bombers and cruise missiles.These countermeasures include anti-satellite weapons, space weapons, and the launching of clouds of debris or projectiles in identical but counter-rotating orbits to a space-based defense.These countermeasures include using fast-burn boosters (which limit the time allowed for boost-phase intercept), light-weight ICBM skirts which limit the infrared signature of the booster (rocketry), use of decoys (e.g., lightweight mylar balloons which, until re-entry, will travel on an identical trajectory with the heavier warheads), use of Ablation materials or reflective coatings which limit the damage of directed energy weapons, launches of numerous harmless missiles early in an attack which might cause the defender reveal his defenses and expend valuable resources.