| Acronym | Meaning |
 | APEX | Advance Purchase Excursion |
 | GZ | Ground Zero |
 | ACE | Accelerated Computing Environment |
 | DWTF | Decontamination And Waste Treatment Facility |
 | S/N | Signal-to-noise Ratio |
 | DC | Direct Current |
 | ESA | Engineering Support Activity |
 | M | Mach |
 | ISIS | International Satellites For Ionospheric Studies |
 | DOI | Department Of Interior |