"they treated them as though he no longer existed"
This outcome for the pilot, being treated invisible by his community emphasises the poem's critique of societal norms that valorise suicide missions.
It questions the value and meaning of sacrifice when it leads to such extensive personal and domestic separation
Ironic reminders of how the pilot has abandoned his mission, the way he's treated when he returns to his family is ironic because they act as if he's dead even though he chose not to die