If you are traveling to the moon, can you think of any reason to bring a gun  ?
-Emergency propulsion
-Protection from hostile people or animals, when landing back Earth 
-Bullets have their own oxidizers, so gun and used in emergency situations as an explosive
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: If you are traveling to the moon, can you think of any reason to bring a gun  ?
### Input: 
### Response: -Emergency propulsion
-Protection from hostile people or animals, when landing back Earth 
-Bullets have their own oxidizers, so gun and used in emergency situations as an explosive