CAMBRIDGE, MA—Engineers at the Massachusetts Institute of Technology have developed an army of tiny robots that can assemble large lattice structures, such as aircraft fuselages or wings.

EVERETT, WA—Boeing has begun assembling KC-46A refueling aircraft for the Japan Air Self-Defense Force at its 767 production facility here.

BERWYN, PA—Triumph Group Inc. has announced a definitive agreement to sell its Nashville-based assembly operations to an affiliate of TECT Aerospace.

OGDEN, UT—Northrop Grumman Corp. recently broke ground here on the future headquarters for its Ground Based Strategic Deterrent program, which is slated to add 2,500 jobs.

WORCESTER, MA—Worcester Polytechnic Institute has received a three-year, $25 million award from the U.S. Army Combat Capabilities Development Command Army Research Laboratory to advance the cold spray 3D-printing technique that could be used to repair vehicles and other critical technology in the field.