The surveillance and scouting of hospitals in both major and "secondary" cities (smaller cities like Colorado Springs vs the major cities like you've listed) has been known for at least 6 months (pretty sure we discussed it here some time ago). Word is that authorities are aware that this activity and that these terrorist agents have even taken jobs as security and janitorial positions at hospitals so they'll be in place when the attacks begin. The idea, it seems, is to launch secondary/tertiary attacks at these care facilities to ensure a greater loss of life.
On a related note, I recently watch an Anonymous video where the Guy Fawkes-masked presenter (likely AI generated) makes the claim that there are multi-city attacks on the near horizon - BUT -- while never identifying WHO is actually behind them, claims that we will be led to believe that they are the acts of one particular group (never stated as Islamists, but the picture is painted clearly) but that this is not the case. The claimed purpose of this is to send us back into a full-blown war overseas (and, "unintended consequences" [read: fully intentional], to implement further restrictions on our freedoms in the name of "security").
If you find this last point a bit far-fetched as "our government would never do that", I remind you that the more facts/information that comes out about 9/11 and other events that've occurred here in the U.S. is raising more and more unanswered questions.
For the sake of public record: I'm quite happy and (mostly) healthy, and have ZERO desire to harm myself or others. I feel safe at home and while I'm out and about I take extra precautions to be safe.