I'm new to ruby and am having difficulty with looping through deep nested hashes and arrays.

Say I have the following JSON:

```
{  
   "Resume":{  
               .... data ....
      },
      "StructuredXMLResume":{  
         "ContactInfo":{  
               .... data ....
               }
            ]
         },
         "EmploymentHistory":{  
            "EmployerOrg":[  
               {  
                  "EmployerOrgName":"ABC Corp.",
                  "PositionHistory":[  
                     {  
               .... data ....
                  ]
               },
               {  
                  "EmployerOrgName":"National Geo.",
                  "PositionHistory":[  
                     {  
            .... data ....
                           }
                        ]

                     }
                  ]
               }
            ]
         }

```

.

```
resume.["Resume"]["StructuredXMLResume"]["EmploymentHistory"]["EmployerOrg"][0]["EmployerOrgName"]

```

gives me `ABC Corp.` and

```
resume.["Resume"]["StructuredXMLResume"]["EmploymentHistory"]["EmployerOrg"][1]["EmployerOrgName"]

```

gives me `National Geo.`

How do I loop to print each `EmployerOrgName`?