The picture shows three astronauts waiting for takeoff.
The astronauts are wearing bright orange uniforms or flight suits. Two of them have US flags on their shoulders so they must be American, but I can't see where the other one is from.
The astronaut nearest the camera looks nervous. I think he is worried or anxious about the flight. Maybe he is thinking about what he has to do on this mission, or maybe he is thinking about his family. Behind him there is a scientist or an official.
They could be waiting for the space shuttle to get ready, or perhaps there is a problem with the weather and their lift-off has been delayed.