Left to right: Dave McKay, Professor of History (1999; 2004; 2009- ), Dave Carlson, Professor of Philosophy (1994-2001; 2009- ), and Dave Murray, Professor of Physics (1969-2001; 2002-2003; 2010-2013), in front of their full size replica of the first atomic bomb, built in 1998 for their Interdisciplinary Studies 290 class titled the History, Science and Ethics of the Atomic Bomb.