EX-2.1
        
        
                
                    from 425
                
                    
                            5 pages                    
            Amendment No. 1 Dated as of October 5, 2004 to the Agreement and Plan of Merger Dated as of March 29, 2004 by and Among USA Mobility, Inc. Wizards Acquiring Sub, Inc. Metrocall Holdings, Inc., Patriots Acquiring Sub, Inc. and Arch Wireless, Inc. Amendment No. 1 to the Agreement and Plan of Merger
        
        
                12/34/56
        
            
    
                            
    
        
            EX-2.1
        
        
                
                    from 8-K
                
                    
                            5 pages                    
            Amendment No. 1 Dated as of October 5, 2004 to the Agreement and Plan of Merger Dated as of March 29, 2004 by and Among USA Mobility, Inc. Wizards Acquiring Sub, Inc. Metrocall Holdings, Inc., Patriots Acquiring Sub, Inc. and Arch Wireless, Inc. Amendment No. 1 to the Agreement and Plan of Merger
        
        
                12/34/56