Following RACER 's dodgy performance , the COBRA primary was used Using in the emergency capability ALARM CLOCK , JUGHEAD , RUNT I , RUNT II thermonuclear devices , as well as in the SHRIMP device .

Following RACER 's dodgy performance , the COBRA primary was used Using in the emergency capability ALARM CLOCK , JUGHEAD , RUNT I , RUNT II thermonuclear devices , as well as in the SHRIMP device .