Here's a short story:

(CNN) -- At least one person was killed when a National Guard helicopter crashed in waters off San Juan, Puerto Rico, a Federal Aviation Administration spokeswoman said Tuesday, citing preliminary information. 

"The preliminary information we have ... is that the wreckage of (the) Army National Guard aircraft was found in the water near San Juan," spokeswoman Diane Spitaliere said in an e-mail. 

The aircraft was destroyed, she said. 

The crash occurred late Monday, according to Lt. Cmdr. Matthew Moorlag of the U.S. Coast Guard in Miami, Florida. 

The Coast Guard received the call to help late Monday night with search and rescue efforts, said Ricardo Castrodad, spokesman for the Coast Guard in San Juan. He said three crew members and three passengers -- one guard and two civilians from Puerto Rico -- were on board. 

The UH 72 Lakota helicopter departed Monday night from San Juan, he said. It was one nautical mile northeast from the Puerto Rican coast. 

Castrodad did not provide information on casualties but said the search for survivors was ongoing. 

CNN's Mike Ahlers and Maria P. White contributed to this report. 

 (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: What sort of crash happened?
Guess: helicopter

Question: Who owned it?
Guess: the National Guard

Question: Where did it happen?
Guess: San Juan, Puerto Rico

Question: Was anyone hurt?
Guess: yes

Question: How badly?
Guess: they were killed

Question: Did the vehicle get totaled?
Guess: yes

Question: When did this happen?
Guess: Monday

Question: What date was that?
Guess: unknown

Question: Was there a spokesperson for the accident?
Guess: yes

Question: What is their name?
Guess: Diane Spitaliere

Question: How did she communicate?
Guess: by e-mail

Question: Did another agency assist?
Guess: yes

Question: Who?
Guess: The Coast Guard

Question: Did they have a spokesperson?
Guess: Ricardo Castrodad

Now answer the following question in the same format.

Question: How many from that agency helped?

unknown