Being primarily familiar with Dublin tower, the thought of only one tower ATCO in the building is inconceivable. Combining AMC and SMC at 0630 would make for a very interesting morning
Still, with regards to the recent closure, the ATCO had to follow the minimum staffing line. A line which has been set down, wisely enough, by our management. For ATCOs, acting outside procedure is like having no immune system. You might be okay, you could well be okay, but if some nastiness decides to come your way YOUR F****D.