Visibility into the Library
It's been said that the police could not see into the Columbine library windows because the windows were tinted and therefore they had no idea the shooters had died just after noon. This is easily proven false. Not only is it documented that the sharpshooters saw clearly into the library, as one asked if he could take a head shot on Dylan Klebold and was told to stand down (this was confirmed publicly by the Sanders' attorney; the attorney and Coni Sanders have both said the sniper signed an NDA during the Sanders' lawsuit so they can't reveal his identity), but Brian Rohrbough presented photographic evidence during the Ireland case (a photo taken the day of the shooting) that proved police could see clearly into the library from the ground below.
The following photo is not the photo presented during the Ireland case, but it was taken during the investigation and shows investigators inside the library close to where Eric and Dylan were found.