Northrop Grumman Corp. received on Monday a $354 million contract to supply three additional RQ-4 Global Hawk unmanned aircraft to the U.S. Air Force. The aircraft, to be assembled and tested at Northrop’s Palmdale facility, will be delivered in late 2016 and 2017. The additional aircraft brings the Air Force fleet to 37 Global Hawks, which are used for intelligence gathering, surveillance and reconnaissance. “The Air Force’s commitment to putting more Global Hawks in the air and our dedication to meeting affordability agreements for production and sustainment ensure that this vital asset will remain sustainable and viable for many years,” said Mick Jaggers, Global Hawk program manager, in a prepared statement. Rexford Industrial Realty Inc. announced on Monday it has acquired a 320,000-square-foot industrial building in Chatsworth for $30.5 million. The Los Angeles real estate investment trust purchased the 9120 Mason Ave. building on 12 acres from LBA Realty in Irvine in an all-cash deal. The large building is fully leased to Northstar Moving Corp. and Cosmetic Laboratories of America Inc., with leases through 2020, according to real estate data firm CoStar Group Inc. “This high-quality building combines market leading features with the flexibility to support one to three tenants, enabling a variety of releasing or re-tenanting options to maximize rents over time,” said Co-Chief Executives Howard Schwimmer and Michael Frankel, in a statement. Rexford has a portfolio of 89 properties with about 9.8 million rentable square feet and manages and 20 other properties with roughly 1.2 million rentable square feet.