It is weird! We mostly get loud booms’ explanation after they happened. It would be most easier for us to get a notice in advance if they are really related to army trainings or other construction blastings! Keep this in mind officials!
So it seems that the loud booms which shook your windows and your houses at night this week in Central Arkansas (around North Little Rock, Sherwood, Cabot) were related to exercises at Camp Robinson. Due to weather conditions, noises could travel farther than usual. They will continue until Saturday night (March 16 2013).
The Arkansas National Guard conducts up to 10 of these training classes every year. The US Army typically puts out noise alerts to notify the individuals in the general area. – KATV