Helen
Nimby is not the context of R3. This is not a back yard issue. This "yard" has over 2m folk, thousands of acres and all will be affected (some unaware of the future footprint of noise and operations in their area, currently unaffected). A huge land grab will be taken from public areas (road diversions etc), housing, commercial & industrial properties etc moved) new railways proposed etc. Housing will be required elsewhere for the future jobs offered, unless poor substandard accommodation is available nearby to offset the cost of travel.
What part HAL will fund is unknown and then tax deductible.