Bridge at site of crash lacked height warning Other signs along roadway have faded, been lost ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page Dina Rudick/Globe Staff The Calvary Coach bus involved in the crash on Soldiers Field Road. Dina Rudick/Globe Staff The bus was towed to a service center in Arlington. Dina Rudick/Globe Staff Raymond Talmadge, owner of Calvary Coach, told a television station that Jackson may have been checking his GPS at the time of the crash. Dina Rudick/Globe Staff By morning, the crash site was cleared. Matthew J. Lee/globe staff Emergency responders worked to free people trapped on the bus. Matthew J. Lee/globe staff The bus carried students and chaperones from Pennsylvania who had toured Harvard. matthew j. lee/globe staff At least 34 people were injured, including one with life-threatening injuries and three with serious injuries.