LOS ANGELES — Robert Bingham has “seen things .” When he was 39, he looked skyward and noticed a worm-shaped ship about 20 feet tall zipping through the clouds.

Unusual things kept popping up around him — or above him, rather. He saw a saucer and some flying objects shaped like beans next. He snapped a picture.

For over ten years, he kept his sightings to himself. That changed in 2010, when his neighbor came over to do some plumbing work. Mr. Bingham showed him his photos. The neighbor asked if he could invite his brother, who was very interested in unidentified flying objects, or U.F.O. s .

In awe of what they saw, they asked if they could invite more people to speak with Mr. Bingham — 40 more, actually. More than eight years ago, that was the first meeting of what is now known as “Summon Events with Robert Bingham,” at a park in Los Angeles across the street from where Mr. Bingham worked as a security guard.