Final answer:
Fahrouk is most likely training to join the Navy SEALS for his underwater explosive exercise.
Step-by-step explanation:
The group in the military that Fahrouk is most likely training to join for his first-year exercise in setting explosives underwater is the Navy SEALS. The Navy SEALS are a special operations force within the United States Navy that specializes in maritime operations. They are trained extensively in underwater demolition and combat techniques.
Learn more about Military training for underwater explosives