Eckels goes to Time Safari inc. He's there to go back in time to shoot a dinosaur. He has to pay $10,000 dollars to be able to go back in time.
Eckels was being foolish and loud. He was being loud so the T-rex heard them. instead of going towards the time machine as Lesperance told him to sp instead he went the other way and screamed he also started shooting his gun at everything around him, so Travis had to shoot the dinosaur to save everyone
Eckels had to pay a debt for changing the future by killing something in the past.