DefenceTalkThe US military has invested billions in blimp-like aircraft to track militants planting roadside bombs but the spyship experiment is losing altitude because of technical failures and changing priorities. The lighter-than-air projects were billed as an innovative revival of an old aircraft design to conduct “unblinking” surveillance on the battlefield — at a fraction of […]https://www.defencetalk.com/us-militarys-airship-programs-lose-altitude-49487/