PRAGUE — As drones from the war in Ukraine increasingly stray into the airspace of EU countries and Moscow’s war machine churns out mass aerial barrages, the Baltics are seeking Ukrainian know-how on bomb shelters. Baltic companies have approached Ukrainian defense manufacturers and civil protection experts in recent weeks to discuss buying bomb shelters, said Ihor Fedirko, the chief of one of Ukraine’s leading defense industry groups. “Yes, it’s true,” Fedirko, CEO and executive director of