Credit: A decade ago, the gang MS-13 was weakened to the point it was considered a lower priority for law enforcement in the D.C. area, but a series of high-profile killings, and a passel of local arrests, have brought renewed attention. From law enforcement and other expert sources, here's a primer on where MS-13 came from, and how it came back.

MS-13: How a deadly gang gained strength in the DC area

Va. mass remembers shooting at congressional ballgame practice with special prayers

Want to be a food critic? Here’s your chance to give it a try

Va. handing out $83M in criminal justice system grants

Safety improvements for pedestrians and bicyclists coming to Arlington

Del Ray streets near congressional baseball shooting reopen