oneas sento university of maryland yesterday along with schools, government and businesses. they have been targeted from moast-to-coast. received an e-mail claiming a bomb waslaed in the building and were warned the only way tprevent an explosion was to pay ransom in >> we heard a fire alarm go off in the building. we heard it was an emergency. everybody in the building started walking outside.0 after about 1 minutes the period cos came and after that we heard that it was a bomb threat. >> now the respoe to the threats have tied up first responders and snarled traffic. the fbi says it's working with local police to find the sender. >> aother puter safety on the line to save her baby in iarthern virg he was pushing her stroller across an inteection when a dump truck hit her during the morning rush. this happened justefore9:30. police say it was because of the woman the baby was unharmed. they say she was able to move the stroller away from the crash when it appeared she was going to be hit. witnesses rushed to the scene to help the victim. >> she was talking and she was consc