Physical Presence is the actual time when the parent was physically present in the United States.
This means that any travel outside the United States, including vacation, should be excluded. Please be prepared to submit evidence such as military records, school transcripts, or tax records (including W-2s). Other possible evidence could include old passports or pay stubs.
Any documented periods of time spent overseas with the United States Military/Government etc. may be computed as physical presence in the United States for transmission of citizenship purposes. Time spent as a dependent of a United States Military/Government employee may also be computed as physical presence. Military records may be requested.