Mongodb query from any array position

My schema looks like this:

{
  _id: "myid"
  user: [{"name":"Bob"}, {"name":"Jenny"}]
},
{
  _id: "myid2"
  user: [{"name":"John"}, {"name":"Jenny"}]
},
{
  _id: "myid3"
  user: [{"name":"John"}, {"name":"Bob"}]
}

I want to find all the documents Bob is an user of. He could be any any position in the array. Could this be done?

Thanks.