Anyone can join, with a 50-word vignette in the comments.
"All we need is to get into the central storeroom, and we're all set -- "
"We can't that," said John, flatly.
Taken aback, Rosa looked at him.
"Too many precautions and protections." His eyes narrowed. "They were ready for war. Some need authorizations I haven't got. Choose some other way."