Castelion , a defense technology company focused on restoring America’s conventional deterrence, announced a $350 million Series B last week to accelerate large-scale production of hypersonic munitions. The round was led by Altimeter  and Lightspeed , with participation from Lavrock Ventures , Andreessen Horowitz , General Catalyst , First In, SVC (Space VC) , Cantos , BlueYard Capital , Avenir , Champion Hill, and Interlagos .  The funding positions Castelion to move from ra