Out with analog and in with digital: KC-135s are being upgraded
                U.S. Air Force Tech. Sgt. Erica Northam, a communications, navigation, and mission systems instructor assigned to the 373rd Training Squadron, Detachment 2, instructs a Block 45 training course to Airmen at MacDill Air Force Base, Fla., August 8, 2017. This class offers avionics technicians a chance to get hands-on experience with the Block 45 program that is replacing old analog systems on the KC-135 Stratotanker aircraft. (U.S. Air Force photo by Airman 1st Class Ashley Perdue)
                
                    
                        PHOTO BY:
                        Airman 1st Class Ashley Perdue
                    
                    
                        VIRIN:
                        170808-F-TJ728-0092.JPG
                    
                    
                        FULL SIZE:
                        1.56 MB
                    
                 
                
                
                        
                        
                            
                                
                                    CAMERA 
                                    N/A
                                    LENS 
                                    N/A
                                    APERTURE
                                    N/A
                                 
                                
                             
                            No camera details available.
                         
                        
                            
                                IMAGE IS PUBLIC DOMAIN
                                
                                    Read More
                                
                                
                                    This photograph is considered public domain and has been cleared for release.
                                    If you would like to republish please give the photographer appropriate credit.
                                    Further, any commercial or non-commercial use of this photograph or any other
                                    DoD image must be made in compliance with guidance found at
                                    https://www.dimoc.mil/resources/limitations,
                                    which pertains to intellectual property restrictions (e.g., copyright and
                                    trademark, including the use of official emblems, insignia, names and slogans), warnings
                                    regarding use of images of identifiable personnel, appearance of endorsement, and related matters.