XM1203 non-line-of-sight cannon
The XM1203 non-line-of-sight cannon (NLOS-C) was a 155 mm self-propelled howitzer. It was the lead vehicle for the U.S. Army's Future Combat Systems Manned Ground Vehicles program.
Source: Wikipedia — XM1203 non-line-of-sight cannon (CC BY-SA 4.0)