I’ll let this article speak for itself… From ScienceDaily:
NASA’s saucer-shaped craft preps for flight test
June 2, 2014
NASA’s Low-Density Supersonic Decelerator (LDSD) project, a rocket-powered, saucer-shaped test vehicle, has completed final assembly at the U.S. Navy’s Pacific Missile Range Facility in Kauai, Hawaii. This experimental flight test is designed to investigate breakthrough technologies that will benefit future Mars missions, including those involving human exploration. Three weeks of testing, simulations and rehearsals are planned before the first launch opportunity on the morning of June 3.