I don't know the policy with LAS, but within our service the Police are utilised on several types of calls. In relation to going to a house to see a patient with mental health issues, there are several routes to follow, a lot of the time it is down to the crew, but if a call taker hears raised voices in the background, or there is a flag on the address due to previous violent behavior (not necessarily physically) then the Police will be requested to attend, and the crews will not enter the property until the police have arrived. They are not their for anything other than the safety of the crew. I have been to several jobs where once they have walked into the house/room they will inform the people why they are there and then step back. Obviously there are occasions where this doesn't work to plan, but at the end of the day there is only one important person in the situation, and its number one. Many of us have partners and children to go home to at the end of a shift, there is no situation that would warrant injury to yourself (or worse). Now I appreciate that in your circumstances it is completely different, but unfortunately other cases in the past have proved that it is better to be safe than sorry (having been on the end of an unprovoked assault and having a knife pulled on me I am cautious on all jobs not just the ones that have warnings) It is unfortunate but no one is able to foresee what might happen, so its a case of taking precautions. A bit off topic now so sorry for that