How to make an origami stealth aircraft

(page 6)

9th picture of origami stealth aircraft

09.

Unfold two valley-folds and two mountain-folds that you have just applied.

Now, we are in the same state of the step #6.

You should be able to count five vertical crease lines.

10th picture of origami stealth aircraft

10.

Prepare to apply four valley-folds and then unfold.