"The reason they seem more frequent right now is because we haven't had them really for the last year because of COVID," Schildkraut says. Such restrictions have also served to limit opportunities for potential shooters "because it reduces the available targets for a person." she says. "Now that much of the country is returning to work, we're seeing an uptick in these events in the sense that they're now out there because people are back out there," she says. Another reason we may see more workplace attacks is that potential perpetrators, who've likely been in isolation over the last year, have had time to plan, Schildkraut notes. "One of the things that we know about shooters, especially those who target schools or other specific public spaces, is that they don't usually wake up and snap."