Everything is going smooth nothing is going wrong. The space craft is in good shape so far. It is boring because nothing has happened. Apollo 13 was looking like the smoothest flight of the program.
A couple of minutes later the oxygen tank blew up. The Apollos 13 command module's normal supply of electricity, light and water was lost
Lovell looked on the left hand window and saw the final evidence pointing towards potential catastrophe. He told Houston that they are venting something into space. It was a gas of some sort.
The ground controllers in Houston faced a formidable task. They has to make completely new procedures that had to be written and tested in the simulator before being passed to the crew
The first thing the crew did was to try to close the hatch between the CM and the LM. Jack and Lovell tried to lock the reluctant hatch but the stubborn lid won't stay shut.
With only 15 minutes of powerer left in the CM the Capcom told the crew to make their way into the LM Fred and Jim Lovell quickly floated through the tunnel leaving Jack to perform the last chores in the Command Module