This is to advise you that President Barack Obama has ordered the United States Flag to be flown at half-staff immediately in memory of the victims of the senseless acts of violence perpetrated on April 15, 2013, in Boston, Massachusetts. The flags shall remain at half-staff until sunset on April 20, 2013. Therefore, Governor Martin O’Malley has ordered the Maryland State Flag to also be flown at half-staff immediately and remain at half-staff until sunset on April 20, 2013. This action is taken under the Protocol for the United States and Maryland State Flag. Any questions on the above should be directed to the Office of the Secretary of State.