Rails HTML Multi Layered IF checking

I am working on a layout that requires a couple of checks to the database, but I cannot figure out the logic on the IF statement. I have a People table where each record holds a Position field. There are times that specific positions will be held by two people. In which cases they want to be Co-Position. So I current am listing said Position on my page with:

<li>
    <% @people.each do |person| %>
        <% if person.position == 'Office1' %>
            <div class="image">
                <%= link_to(person_path) do %>
                    <%= image_tag("profiles/#{person.uname}S.jpg") %>
                <% end %>
            </div>
            <div class="body2">
                <h4>Office</h4> 
                <%= link_to(person_path) do %>
                    <h5><%= person.fname %> <%= person.lname %></h5>
                <% end %>
            </div>
        <% end %>
    <% end %>
</li>

Now within that I need to run a check at <h4>Office</h4> to see if another record holds Office2, but if I place an IF statement around the H4 tags will it be checking the already fetched record or will it check the entirety of the Person database? Do I need to do this check first and then do an IF/Then or can this be done in a more streamlined way?

Basically I need to check if Office2 is present somewhere in the Position field, and if it is I need the H4 to read Co-Office, else I need it to read Office.