Personally, I didn't play it and it wasn't missed. You still get the story just fine.
If that was your favorite level, then you must not have played the snowbound airbase. I haven't finished it yet, but so far SP is far less interesting than COD4 was. Maybe because it's not new now, but it seems more like an unending horde mode, other than the airbase level. Maybe it will better.
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Xbox 360 & a PC currently undergoing mitosis
•AMD Athlon 64 X2 DC 6000, 3GHz •3GB PC2 5300 DDR2 •Sapphire Radeon HD 6950 2 GB
•Creative SB X-Fi Fatal1ty Pro / Logitech Z-5500 •Logitech G27, Nixim mod