I got through 4 no casualty Deathclaw attacks with credit. I then had 2 successful incidents with no credit. Possibly from a "cold start" I got credit for a successful incident. This was followed by 2 noncredited successful incidents. I am now at 5 credited incidents and trying to decide whether to eliminate this objective and accept something else. Fallout Shelter - so much promise - so many frustrations. IOS 9.2 on ipad Pro with update overlays thru 1.3 1. I am so sad about this game's faults.............