This week marks the beginning of the end for the Humvee.

That’s because the US Army chose Oshkosh Defense to manufacture about 55,000 joint light tactical vehicles (JLTVs) that will become the successors to Humvees and mine-resistant, ambush-protected vehicles (MRAPs). The initial contract awarded to Oshkosh on Tuesday is for $6.7 billion and 17,000 vehicles. The total contract, valued at up to $30 billion, could provide the Wisconsin-based company with work through 2040.

The new offering provides underbody and side-armor protection similar to a tank’s, but retains the on-ground and in-theater mobility of an all-terrain vehicle. The vehicle’s reduced weight allows it to be transported by Chinook helicopters and amphibious vessels, a feat that was largely impossible with MRAPs.