Credit: Senior White House adviser Jacob Brewer was mourned by crowds at National Cathedral Friday. (WTOP/Kate Ryan)

Friends, family gather to remember White House staffer

Daylight reveals extensive damage after explosion

Multiple homes damaged by explosion, fire in Columbia, Md.

Police: Missing Md. woman located

Obama ‘heartbroken’ at loss of adviser fatally struck during local charity ride

Philadelphia kidnapping suspect later arrested in Md. likely to plead guilty