"They are heavy," Dennis warns, and then he added, "And also there is another box in the trunk."
When Keith heard of this, he tries to hide his annoyance. However, he was not able to do a very good job of hiding the edge of annoyance from his voice
"These should have been filed a week ago."
Dennis must have noticed the annoyance from the other party's tone and so he snapped back at him.
"And then what?!"
He faced Keith and gave him a daring look.
"You would have to come back and dig them out all over again anyways once the patients return to the mobile clinic."
He added afterward.
Alice and Keith have both grown quite familiar with these flashes of temper.
At first, they would often get surprised by Dennis's sudden outburst, but over time, they eventually get used to it.
Dennis was usually such a quiet, placid fellow, but once he started getting annoyed, he would be like a different person.