According to the trade magazines, SEAL TEAM is filming in Puerto Rico. Apparently, San Juan is standing-in for Mexico City.
Before the attack on Gonzalez's compound, Sonny asks what the Mexican Marines say before each mission. He is told "Que la Fuerza te acompañe" which is Spanish for "May the Force be with you."
SSE is Sensitive Site Exploitation.
In the opening scene Bravo team is blowing off some steam on a golf course. There is a similar scene in the 1990 movie Navy Seals. This is possibly a homage to to movie.
The golfing scene is very similar to the scene in Navy Seals. Notably when the Seals start aiming golf balls at each other and the pool shot sinking the ball.