I live about 40 miles south of Kansas City and for the past 2 nights I have heard these exact same jet-like sounds. I am glad I searched for others who may have heard these sounds and stumbled across this website. Each time, I heard the sounds around 11 p.m. The sounds seemed to last for anywhere between 45 seconds to over a minute before taking a 2-3 minute break and then I would hear the same sounds. I heard the sounds 4-5 times each night before going back inside. One of the nights, I also heard a sound that was similar to a motorcycle but it lasted for 2-3 minutes and I only heard it once.