My son was in asecurity vechile without a wheelchait ass he clearly is in a wheel chair he was thrown out of his seat inside the van and was injured

       Your son may have a case, but your post doesn't indicate whether he was injured or not; if he was not injured, there probably is no case; if he was injured, there may be a case. If the claim involves a municipality, as he was in custody, Wisconsin law requires that written notice of claim be personally served on the municipality within 120 days of the event, or the claim would be forever barred. Since there are strict time lines involved with making such a claim, it would be best to consult with an experienced personal injury lawyer as soon as possible.