Oh, you better believe DCist is still on the case of the mysterious noise which woke the District this morning. (We’ve got stick-to-itiveness, what can I say.) Tamika Wright, a spokesperson at Fort Myer, tells DCist that the cannon blasts “weren’t coming from” the base as we previously suspected, but instead were being fired at Arlington Cemetery as part of an installation. So we dialed up Arlington National Cemetery spokesperson Steve Satkowski, who tells DCist that there was indeed some blasts being fired at the Cemetery this morning.

Our Fox Mulder-esque search for the truth about this morning’s blasting continues! DCist was able to get in touch with Shannon Whalen-McDaniel, a spokesperson for Arlington County, regarding the possibility that the noise had originated from the work which is currently going on at the Rosslyn Metro station.