The answers to the clues below will have something in common.

1. Tuxedo
2. Front of a locomotive
3. V on a TV
4. Second-story man
5. Infantryman
6. Rough embrace
7. Teenage infatuation
8. Very alert to surroundings
9. Diploma
10. Kind of shirt with turned-over collar
11. Exaggerated tale
12. Two on a pair of dice
13. Courageous
14. Protected combat position
15. Secret WWII nuclear weapons project

Answers:

1. Monkey suit
2. Cow catcher
3. Rabbit ears
4. Cat burglar
5. Dogface
6. Bearhug
7. Puppy love
8. Eagle-eyed
9. Sheepskin
10. Turtleneck
11. Fish story
12. Snake eyes
13. Lion-hearted
14. Foxhole
15. Skunk Works