system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek] What tactical situations warrant the use of phasers versus photon torpedoes?

What are the advantages/disadvantages of these two types of weapons? Are there other weapon options available?
gpt
* Phasers are good for shields and don't run out.

* Photon torpedoes are an expendable resource but are absolutely devastating on unshielded enemies. 

You drain their shields using the phasers and then finish them off with a photon torpedo double-tap.