Sora提示词：A realistic, smartphone-style

A realistic, smartphone-style video filmed inside a modest American living room on Christmas evening.

The front door opens.

A U.S. soldier in his late 20s or early 30s stands in the doorway,
wearing a winter military uniform.

An elderly father steps forward and stops directly in front of his son.

They face each other in silence.

The father straightens his posture and raises his hand in a formal military salute.

The son immediately stands at attention and returns the salute.

They hold the salute for a brief moment.

No dialogue.
No background music.
Natural indoor lighting, slight handheld camera feel.
No cinematic effects, no filters.
Aspect ratio: 9:16