Acting suspiciously
Lena had no idea, but she knew she needed to find out. Lena maintained a tight eye on the man as the trip continued, hoping to glean any information that would lead her to a conclusion about what was going on. He kept checking his phone every few minutes, she noted.
An important message
The plane had internet, so it wasn’t unusual for people to be on their phones, but he kept checking it as if he were waiting for some type of crucial message. Lena put it to the back of her mind because it wasn’t substantial enough to make her suspect him of anything.