The computer has run a full diagnostic of the engines. The conclusion is that one of the power cells is starting to fail. We have ten power cells, and can run on only five. I have decided that we are going to press on without replacing the cell for now. We will be able to replace the cell when we get to Mars. They have informed me they have ample in supply reserves. I have informed the crew that we will have to stay on at Mars in order to do a full work-up on the ship.
On a more uplifting note, I have informed the crew that they will receive five extra days of shore leave on there choice of Mars or Earth, and I feel thins is much needed since we have made five trips without any break. I'm also very much looking forward to seeing my family on Earth. Some two months is just far too long to be away from the people you love.