bowling green, kentucky, loud booms

BOWLING GREEN – Several residents report hearing a loud boom just before 10:00 p.m. Monday around Plano and Alvaton, Kentucky. The source remains unknown. Kentucky State Police dispatched units to the area, but as of 11:55 p.m. Monday nothing had been found. – WBKO

Here a few reports from residents on Topix

anyone else just hear an extremely loud boom?, Went outside immediately after boom, did not see anything…… plano, maybe a military aircraft passing mach 1?, and the funniest: Aliennssss!!!!!! The end is near, hide yo kids, yo wives and yo husbands!