1.   Protruding bolts, sharp edges or points, wood splinters, swing hangers or chains can cut or puncture children.

2.   Though Atlantis was unaffected, mission managers have directed engineers to determine whether a protruding bolt could rub against the shuttle, causing the tank to gyrate.

3.   At worst, a protruding bolt could cause the separated fuel tank to tumble and possibly cause the tank to slam into the shuttle.

4.   At worst, a protruding bolt could cause the separated tank to tumble and slam into the shuttle.