On PMSE, we don't get overloaded with flags, but they do occasionally come in. The 13 current 2K users on this site have access to a moderation dashboard that will show flags, but this is buried in the "Tools" menu in the top navigation.
As a moderator, these flags are displayed in the toolbar next to the user badges. On Meta Stack Overflow, this is known as the "bat signal". By having this bat signal display in the toolbar, I instantly know if there are items that require attention. However, for 2K users, the flags are only displayed if there are at least 5, which rarely, if ever, happens on a beta site. I did some searching, and I found a Userscript, created by Michael Mrozek, that will embed the flag count in the toolbar, regardless of the number:
Flag count on the Workplace SE Beta (2K View) courtesy of Userscript:
As you can see, I now get alerts if there are flags in the system as a 2K+ user on another beta site I participate on, and this is what it would look like for you on PMSE, if you have 2K+ reputation.
By giving you what I call the "moderator experience", I'm hoping that this can help get more eyes on the flag queue so that we all can quickly take action when needed, whether that be a comment, a close vote, another escalation flag, an edit, etc.
To install the script, you'll either need Google Chrome, or Firefox with Greasemonkey installed. Save the code below into a file called "flags.user.js", and then drag and drop it into the "Tools -> Extensions" menu in Chrome.