The man in charge of Amtrak is expressing confidence that the passenger railroad will stick around. Amtrak President David Gunn says he and other company executives have been taking train trips through Missouri and elsewhere to determine how the railroad is being run and to look at ways of improving the service. Gunn says despite some tough financial times of late, he believes Amtrak will survive. He says, however, that a large investment is going to be needed for the necessary maintenance. Gunn wants Washington decision-makers to consider the railroads as part of the overall transportation system which is in need of federal dollars.