"John Smith I" wrote:

Get it right moron, take an english class!

http://chuma.cas.usf.edu/~olson/pms/apostrophe.html

Sorry John.

Dave is right. You are incorrect.

Contractions are formed as 's: He Is = he's.

Posessives are likewise formed as 's: Heil's contacts all used CW.

Plural possessives are formed as s': Heil's contacts' radios were set to CW
mode.

73
kh6hz