Some of Elon Musk’s earliest Department of Government Efficiency recruits are plotting their next act: getting into the business of war.Gavin Kliger, Luke Farritor, and Jack Stein, three of the young engineers who helped take an axe to the federal workforce last year, are raising $130 million for a new AI start-up backed by venture capital firms Andreessen Horowitz and Sequoia Capital, according to several sources with knowledge of the funding round.The company will focus on using AI to secure g...