I only need one thing

I teach different things and to make / use my own pictures. Those we can get from the system is not always the bester you can get .....
So that for my own pictures.
Last I do teach there came a good kommert from my students.
I had arrived in my teaching: what do we do when we make contact with the enemy.
Then came this: I only need one thing: where they are ...
Me: What. See the picture: Hmm, not bad, that I can use later.

For those who can not military hand signals:
What I say with my hand is: see / I see / look / observable, depending on what comes before and after.
In this case: I see. And when I hold my weapon up, it's the enemy's direction.
"I see the enemy"