@citizen: A large amount of foam and bubbles was seen flowing from the Rainbow Pool at the National World War II Memorial in Washington, D.C., Thursday afternoon, with graffiti also reportedly visible at the site. The National Park Service is asking visitors to stay out of the pool while the substance remains unidentified. It’s unclear who may be responsible or whether the incident is connected to the graffiti. National Guard personnel were also seen at the memorial as part of ongoing presence patrols across the National Mall, though it’s unclear if their presence is related to the incident. The memorial honors the 16 million Americans who served in World War II, including more than 400,000 who died. Download Citizen for real-time updates and alerts happening near you. 📲