Tanks are Goliaths. They’re covered with layers and layers of thick armor for protection, which makes them huge and slow-moving. Now, DARPA wants to change that. For the last 100 years, the ability of weapons to punch holes through thick armor has advanced faster than the armor’s ability to withstand protection, says a DARPA release. The agency wants to develop vehicles that are lighter and move quicker to dodge attacks rather than depend on armor for safety.