Here are a few things that I have learned since hatching shipped eggs.
ALWAYS candle shipped eggs before setting for these reasons.
1. Look for hairline cracks. Even if an egg doesnt look cracked there could be some. I learned the hard way with this. I had a shipment and a coulpe eggs were broke, that should have warned me to candle all of them but I was busy at the time so I unpacked and let them settle. A week later I had one pop in the bator. Luckily it broke on the bottom side of the egg so it didnt get others yucky. I then had to transfer a full bator of eggs into a second bator that was half full just to clean the first. After a good cleaning I candled all of the eggs as I put them back and actually found 7 more that had small cracks. What a mess that could have been.
2. When you candle you will be able to check the airsac. If they have been so shaken that the airsac is in tiny bubbles it is not even worth setting. I have set many of these and none have ever developed. Now the airsac might be loose and goes to more of the egg then it was intended but it wasnt actually broke loose. Many of these will still develope, the only thing you will have to watch for with these is the possibility that they will pip on the wrong end.
3. For the first time shippers they might by accedent send an egg that has started developing. I had that happen once and it was a total accedent. Thier hen had pushed a couple out for some reason so they didnt realuze that they had been sat on. They were 2/3 developed when I got them and of course had died. With this said I usually always candle my eggs before shipping also, just to make sure that this doesnt happen to me.
Since they have been moved around a bunch in shipping it wont hurt to candle after unpacking before you let them sit to rest. I would not have set that egg myself even if I tried to patch the fracture, just not worth the mess if it explodes in the bator. Jenn