Parsing XML in VB.Net

I'm attempting to parse an XML document (see attachment) in VB.Net.  Unfortunately, I'm having trouble identifying the nodes for which I'd like to parse elements.  Here's my current code:

        
        Dim xmlDoc As New XmlDocument
        xmlDoc.Load("c:\temp\XMLSample.xml")
        Dim nodes As XmlNodeList = xmlDoc.DocumentElement.SelectNodes("/Employees/Employee")
        Dim strField1 As String = "", strField2 As String = "", strField3 As String = ""
        For Each node As XmlNode In nodes
            strField1 = node.SelectSingleNode("FirstName").InnerText
            strField2 = node.SelectSingleNode("LastName").InnerText
            strField3 = node.SelectSingleNode("Address").InnerText

        Next

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However, the code within the 'For Each' was bypassed.  I also tried "/EmployeeResponse/Employees/Employee") to SelectNodes, but got the same result.

Any help is greatly appreciated.XMLSample.xml