So, here's the deal. While the assumption is that politicians would be bailed out immediately, from a practical perspective that isn't necessarily true. After the first day passed without any WMD's, I think that Western politicians would stay where their C&C was situated. Because war plans (well-known to the Soviets because of Rainier Rupp's spying) called for NATO forces to use tactical nukes once conventional forces were unable to defend a certain point (either the Elbe or the Rhine, depending on who you believe), NATO would arm the Pershings and then the leadership would bail out en masse. Because NATO war plans called for being the ones to launch a first strike, I find it logical, if not rational, for leadership to stay put until they launched. Now, what happened here was an accidental detonation, a miscue in the field, and that derailed NATO plans, leaving them more susceptible to being taken out. We know from history that leaders from Jack Kennedy to Dubya Bush wanted to stay in the White House even if everything went to hell, not to mention that Reagan was horrified at the thought of nuclear war and probably would want to stay in town to reassure citizens. With that said, Kassel now made NATO the ones to escalate, and because the HotLine ran through the NMCC inside the Pentagon, it'd be a lot harder to properly use it from the Nightwatch plane. So, there's a lot of factors that I think contribute to leadership staying in their capitals.