On this week’s Defense & Aerospace Report Business Roundtable, sponsored by Bell, Dr. “Rocket” Ron Epstein of Bank of America Securities, Sash Tusa of the independent equity research firm Agency Partners, and Richard Aboulafia of the AeroDynamic advisory consultancy join host Vago Muradian to discuss a brutal week on Wall Street as the market loses $1 trillion as shocked investors react to China’s DeepSeek AI and the Federal Reserve for the first time said it won’t continue interest rate cuts; implications of the worst US air disaster in 16 years as an US Army UH-60 Blackhawk helicopter collides with an American Airlines jetliner killing 67; President Trump imposes 25 percent tariffs on Canada and Mexico, and a 10 percent tariff on goods from China; analysis of 2024 earnings reported by Boeing, General Dynamics, L3Harris, Lockheed Martin, Northrop Grumman, RTX; Lockheed’s aeronautics charge and Northrop’s second low-rate production contract for the B-21 Raider bomber; and King Charles changes the name of the Royal Navy’s last Astute-class submarine.