Senate Pres Miller, House Speaker Busch ask Hogan to speak to panel on $20 million Grumman grant. He says no; medical pot panel says to reach racial diversity among business owners, delays could occur in implementing industry; Prince George’s Exec Baker urges Maryland congressional delegation to push feds to commit to Maryland for FBI HQ before state loses clout; maglev proponent says groundbreaking could occur in three years; Joe Custer takes father’s House seat; poll finds Van Hollen leads Szeliga in Senate race; Dem VP hopeful Tim Kaine fund-raising in Maryland; with post-Labor Day school start set for 2017, Washington County considers killing spring break; and Republicans on Arundel Council asks school board to reconsider transgender guidelines.