Security guards are on site 24 hours a day, seven days a week. During business hours, the security guard patrols the property. After hours, the security guard can be reached at the reception desk at 301-209-3384 or by cell at 202-409-0226. Please report any suspicious person(s) or activity to the security guard and he/she will investigate. You can also contact the Reception Desk x3000 and they will get in touch with the building engineers and/or the security guard.