HELLADS was to be tested during summer 2015 at White Sands. General Atomics has also proposed its Gen 3 HEL to the Navy after an ONR solicitation for a 150 kW laser weapon suitable for installation on "Arleigh Burke"-class destroyers, to be tested in 2018. The company has displayed the laser as a Tactical Laser Weapon Module which includes high-power-density lithium-ion batteries, liquid cooling, one or more laser unit cells, and optics to clean up and stabilize the beam before it enters the beam-director telescope; a unit cell produces a 75 kW beam, and modules can be combined to create beams of 150-300 kW in power with no beam combining like low-power fiber lasers. General Atomics also plans to offer the Gen 3 to the U.S. Army for their High Energy Laser Mobile Demonstrator (HEL-MD) when its power levels increase to 120 kW in the early 2020s.