D.C. airspace is complicated. Experts say Trump's arch would add one more risk

The Trump administration wants to build its 250-foot arch near one of the country's busiest runways. The FAA will determine whether that poses a hazard. But independent experts already have concerns.

<img src='https://npr.brightspotcdn.com/dims3/default/strip/false/crop/8214x5476+0+0/resize/8214x5476!/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2Fed%2F23%2F398de48e4fcdbeaf34f7549f8122%2Fgettyimages-2275752283.jpg' alt='A passenger plane flies over the location of Trump's proposed 250-foot arch on its descent into Ronald Reagan Washington National Airport.'/><p>The Trump administration wants to build its 250-foot arch near one of the country's busiest runways. The FAA will determine whether that poses a hazard. But independent experts already have concerns.</p><img src='https://media.npr.org/include/images/tracking/npr-rss-pixel.png?story=nx-s1-5950462' />