I noticed the preposition after 'call' while I was reading a newspaper. In my understanding, I need to use 'to' after 'call', so that we know who to call and who to answer. What are the differences between 'call to' and 'call in'?
Here is the original sentence from a news article:
"Toronto police have called in the marine unit, coast guard and a helicopter from Trenton to assist in their search for a missing Toronto DJ who fell off a boat near Scarborough Bluffs Sunday night."
Here are my sentences that I understand.
"Marine unit, coast guard and a helicopter were called by Toronto Police. Toronto Police asked them help to find missing persons."
"Toronto Police called to marine unit, coast guard and helicopter to get some help for finding missing person."
Do I understand correctly?