<h1>Military Leadership Grilled on Messaging App Leaks, Troop Deployments, and Controversial Pentagon Budget Proposals</h1> Defense Secretary faces congressional hearings addressing multiple controversial issues including sensitive military information shared via messaging app, deployment of Marines to Los Angeles during immigration protests, and significant Pentagon spending proposals. Lawmakers will scrutinize military budget, troop deployment legality, and recent administrative actions. Multiple investigations are ongoing regarding messaging app communications and potential security breaches. The hearings represent first public congressional examination of recent defense leadership decisions.