1. The cleanup at the scene of the deadliest mass shooting in modern American history is nearly complete, and all of the dead have now been identified. But investigators still don’t know what motivated the gunman. Here’s the latest.

The 36 women and 22 men who were killed ranged in age from 20 to 67. They were teachers, police officers, secretaries, retirees, from across the United States; these are their stories.