Marathon bombing anniversary: President Obama and aides to observe moment of silence

President Obama speaking at “Healing Our City: An Interfaith Service” on April 18, 2013

President Barack Obama will observe theanniversary of the Boston Marathon bombing with a moment of silence at theWhite House.

The moment of silence is planned for2:49 p.m., the same time two bombs exploded near the finish line of the marathonon April 15, 2013.{} The president plansto make the remembrance privately Tuesday with aides in the Oval Office.

The attack killed three and woundedhundreds.

Vice President Joe Biden and his wife, Jill, areattending a memorial service at Boston's Hynes Convention Center. Biden'soffice says he will deliver remarks in tribute to victims of the bombing, aswell as the survivors and first responders.