Video/pictures released of Boston bombing suspects

Here's the link to still pictures: http://www.fbi.gov/news/updates-on-investigation-into-multiple-explosions-in-boston/updates-on-investigation-into-multiple-explosions-in-boston

I found it interesting that the two suspects were called "persons of interest" at the beginning of the news conference held Thursday... but the FBI also used the word "suspect."

I wonder if the average person knows or cares about the difference. To me the difference is that a "suspect" is someone thought to have had a high probability of committing a crime. A "person of interest" could be someone who law enforcement thinks (but isn't to the level of high probability) was involved in a crime.

Your thoughts?