“They are coming.”
Nathan looked up at his father, his eyes wide. He wanted to ask who was coming but the tone of his father’s voice told him he’d best not ask. His mother gripped his shoulder tightly and whispered to him.
“Nathan, go to the shed and hide behind the woodpile. Do not come out until I tell you to. Okay? No matter what?”
Nathan swallowed and hugged his mother tightly. He looked up at this father who ruffled his hair then gently pushed him toward the kitchen door. Both parents watched until he was out of sight.
”James what will we do?”
James didn’t answer right away. He looked down at where Nathan had been playing.
As someone already mentioned, you switch from the boy's point-of-view at the beginning of the scene to someone else's after the boy leaves.
Another nice thing you could do is give the reader a little more info on the "they", even just a name or something in the first lines. The characters reacted to their pending arrival in a dramatic way, and waiting too long to let the reader in on what the characters know about them could seem manipulative, even if it is not your intent.
Thank you for your responses. I didn't notice the POV switch before. >.<
I'm not talking about a long expository rundown either, just something to let the reader see the "they" in a similar fashion to the characters. For all we know the parents are old fashioned/over-protective and the Swedish Bikini Team is ready to overrun the property and they don't want the boy to see the brazen gals bouncing around.
I want to know NOW who "They" are. Nathan's father can say, "The evil monkey robots are coming." If I know who is coming I can connect to the characters better and want to read more. It's not "hook"y enough for me without knowing who is coming.
Like, the wife asks, do they have guns?
They are coming.
Do they have _____? or -- How many this time? Or Arch enemy must have sent them.
Some slight hint might work. Work better than what you have now.