Hello. We are a start-up, building a system for Situational Insomnia (such as Hotel Insomnia) management. We have data on the extent of the problem in Business Travelers, Athletes and Shift workers. A recent conversation with a commercial flight safety director brought up the existence of this problem in commercial airline pilots. I am wondering how extensive is this phenomenon? We are interested particularly in pilots who sleep well at home but have trouble falling asleep in hotel rooms. Any insights would be appreciated.