Why did US suddenly reopen a 1990s air defence post? What does it know about Kaliningrad & Russia?

The US Air Force has reportedly restored fighter alert operations at Eareckson Air Station on Alaska’s remote Shemya Island for the first time since the 1990s, with F-16s maintaining the posture from October 18 to 26. The deployment concluded with a joint US-Canadian air defence mission over the North Pacific, supported by E-3 Sentry surveillance aircraft and aerial refuelling tankers.