Accompanying　dramatic　advances　in　wireless　Mesh　networking,　the　demand　for　advanced　mechanisms　to　employ　wireless　Mesh　networks　in　public　safety　continues　to　grow.　However,　this　special　field　communication　brings　new　security　challenges.　In　this　paper,　we　import　the　expectancy-value　theory　in　cognitive　psychology　to　behavioral　evaluation　of　node　and　propose　a　behavioral　model　named　NODE　EYE　for　public　safety　communication　in　wireless　Mesh　networks　and　exercise　the　model　to　reason　a　variation　of　station-to-station　key　agreement　protocol.　We　contend　that　our　model　facilitates　reasoning　about　protocols　designed　for　public　safety　by　integrating　the　behavioral　trust　and　cryptographic　aspects　of　communication　in　the　special　field.　We　illustrate　our　concept　by　introducing　the　key　agreement　to　support　the　special　communication　cases　associated　with　the　public　safety.