How do you use proud in a sentence?

From Lee Greenwoods God Bless the USA song:

And I'm proud to be an American

where at least I know I'm free,

And I won't forget the men who died

who gave that right to me,

And I gladly stand up next to you

and defend her still today,

'Cause there ain't no doubt I love this land

God Bless the U.S.A.