So I decided to open up this posting with a Janus Directive house ad for those of your who aren't as familiar with that cross title DC saga. It's a pretty large file so you can magnify it for a better read. You might find it interesting to know that in mythological terms Janus was the "two faced" god of beginnings and transitions. So Checkmate and Task Force X found themselves among the various U.S. agencies and organizations duped by Kobra into fighting amongst themselves.
Certain members of Checkmate's strategy was to capture Amanda Waller in order to get leverage on Task Force X (Checkmate #16 Vol.1 1989). A hand full of agents break into Belle Reve and quietly attempt to subdue Belle Reve's security personnel as well as members of The Suicide Squad. One of their first targets is Captain Boomerang and as usual they make the mistake of underestimating him.
Once you've read enough books that feature Capt. Boomerang you get to a point where you can almost see what's going on in a live action way in your head. It's like you can actually hear him talking with that Aussie accent. It's one of the things that makes him such a fun character to follow.
I'm sure at this point you have some idea happens what the next "rang" does that Digger is about to throw. Also seen in this issue is Bronze Tiger in some hand to hand combat against the other invading Checkmate agents. In the middle of this Waller makes good her escape from Belle Reve and the Checkmate agents are forced to abort their mission and flee. Eventually of course all the players involved figure out they've been had by Kobra and combine forces in the final showdown to stop Kobra from his latest doomsday scheme.