1: people are trying to capture Horton but he wants to keep the spec safe. 2: he needs to cross a wobbly bridge to put the spec some where safe and it is dangerous. 3: there is a very big drop if he would to drop and it would hurt a lot. 4: the bridge is very old and it could brake and the spec would not be safe. 5: he is very nervous because he does not want to be captured.