With all the recent shooting incidents in the US, please consider improving the security and safety around long lines that form near entrances/exits where people are most vulnerable. I think one way we can improve the safety of everyone is to use some sort of marker in lines (similar to the markers used in lines during Covid) that create spacing between people. It will help prevent crowding and pileups in the event that people need to disperse quickly. I also suggest placing security and law enforcement personnel near lines to monitor for suspicious activity. Thank you.