First some calling tips to remember

TAKE A DEEP BREATH AND STAY CALM!
BE BRIEF, CLEAR AND ACCURATE- ANSWER ALL QUESTIONS THE DISPATCHER ASKS
STAY ON THE TELEPHONE WITH DISPATCHER (WHILE SAFE)
GIVE LOCATION CLEARLY

What to tell the 911 Operator - When asked

WHERE are you - Location in extremely important
WHAT is happening
WHAT is your call back number
WHEN the incident(s) occurred
ARE there any injuries