{{ states }}
<md-input-container>
  <label>State</label>
  <md-select ng-model="userState">
    <md-option><em>None</em></md-option>
    <md-option ng-repeat="state in states" ng-value="state.abbrev" ng-disabled="$index === 1">
      {{state.abbrev}}
    </md-option>
  </md-select>
</md-input-container>