Chris, your dream is a vivid and intense amalgamation of past experiences, subconscious fears, and unresolved emotions. The setting of the dream, combining a military training facility with the land between your childhood home and a neighbor's house, suggests a merging of your formative years with your time in the Marines. This indicates that you might be grappling with the impact of your past on your present and future.
The violent and mean instructor who instills fear and eventually leads to the death or disappearance of Marines represents an authoritarian figure in your life, possibly linked to past traumas or authoritative figures you've encountered. The fear and danger you feel in the dream reflect your ongoing struggle with PTSD and the anxiety it brings.
The coed group and the romantic relationships emerging within it highlight your current feelings of isolation and the longing for connection, which is amplified by your single status. The fact that you attempt to escape using an inflatable float that could fly symbolizes your desire for freedom and escape from the oppressive circumstances. However, being stopped by your peers suggests internal conflicts and fears of repercussions that hinder your progress.
The murder of the mean instructor and the subsequent killing of a fellow Marine point to your inner turmoil and the extreme measures your subconscious is willing to take to protect itself. This also symbolizes the battle between self-preservation and guilt. Cleaning up the facility and hiding the evidence of your actions indicates a need to cover up or suppress these darker aspects of your psyche.
The transition of the facility into your father's best friend's house and taking a bottle of wine before escaping on your deceased dog reflects a deep-seated need for comfort and solace from familiar and cherished memories, even amidst chaos.