Units 70 and 71
These are Abrams tanks available since 2005.
While I personally remember the idea of sending Abrams to Israel being discussed at some point a few years ago, the thing never materialized. There are no israeli Abrams listed at the Middle East military balance, or
www.israeli-weapons.com or pretty much anywhere else.
They should be deleted.
Unit 54
This is a Tiran 6 which is listed to be in service until 2010.
This is pretty damn unlikely, to say the least. The Tiran are long gone, either sold to foreign customers or earmarked for conversion.
www.tau.ac.il/jcss/balance/Israel.pdf does not even list them anymore. Ditto for the others sources I have seen.
Its out of service date should be modified.