Which guideline instructs you about what you can or cannot do regarding updates on injured Marines?

Never post any information that is classified or sensitive$.$

Don't use any words, logos$,$ or other marks that would infringe upon intellectual property rights without the permission of the owner.

Never use social media to notify families that their Marine has been injured or has died.

Realize that social network "friends" and "followers" may potentially constitute relationships that can affect your ability to hold a security clearance.