Thanks, Art, unfortunately I already knew the story, and don't have appropriate age children in the house to account for something like this.

I pulled spark plugs 1 and 2 out and sniffed them. They smelled of gas. Not badly fouled up or anything, just regular looking 2 year old spark plugs. I stopped there.

Then proceeded to pull the rail. The injector o-rings were pretty stuck, and some leverage on the rail was required. After that, I saw that one of the plastic injector end cups, don't know the proper name, did not come out, and as a result the yellow washer that's above it took a walk down into the bowels, as did the fuel injector when I took it off the rail. Long story short, I found everything and put the injector back on the rail, now will go run "level 3 diagnostics".