Hoping someone can help me better understand the ADIZ: Why is there an inner AND outer line for the ADIZ? I thought it was just one line and if you cross it then you’ve exited or entered the country's airspace. What is the no-man’s-land in between the inner and outer marker of the ADIZ? And must you be on a DVFR flight plan to cross over the INNER boundary of the ADIZ? For example, if you’re flying VFR from Fort Myers to Key West OR from Tampa to New Orleans, can you cross that inner boundary without filing a flight plan and you’re okay so long as you don’t go outside of the outer boundary?