Attendees at the "Salute to America" event in Washington, D.C. have been instructed to take shelter as a precautionary measure due to potential severe weather. NBC News’ Gary Grumbach is reporting live from the Ronald Reagan Building, where approximately 250 guests are awaiting further updates. The threat centers on inclement weather possibly impacting the National Mall, the planned location for the event. Authorities have prioritized guest safety, leading to the shelter-in-place directive. The extent of the weather threat and potential delays to the event remain unclear at this time. Officials are monitoring the situation closely and will provide additional guidance as it develops. Further details regarding the nature of the inclement weather were not immediately available.