Modern warfare online help

What I have recently learned but havn't been able to do on Modern Warfare 2 is the "easiest" way to get a tactical nuke online. What you do is have hardline on with these kill streaks; Harrier, Chopper gunner, and Tactical nuke. I heard that once you get the harrier, it is almost garenteed that you will get a nuke. I tried it but I accidentally called it on myself. TIP: Make sure that you are far away from the area that you call the harrier on, and to be safe, be inside and close to the ground. So, good luck and hopefully this works for you

The best way to beat Homeland Security on Vetran

The best method that I found to beat this level. It's easier if you have someone else to revive you. When you spawn, grab the claymores then the sentury gun and then run to the left into the building behind the gas station building. go inside and have your partner grab the other sentury gun and both run behind the counter. Place both sentury guns and have the one on the right aimed a little more right so it can get the guys who come from the side. This will work for the first few waves, but sometimes, the guns will die. When you face the helicopters, and if you missed with your RPG's or ATH4S, it will take about 3 or four clips of both of your guns to shoot it down. If you follow these tips, then you will beat the level. If you have any way to beat any hard spec ops, post a comment with your tips.

Now I need help

If anyone out there has beaten the ODST Firefight acheivement for beating a firefight mission on hard for over 4 sets, and if you did it on Lost Platoon, I need some tips to do it. My friends and I tried it about 5 times and we got to the 4th set, 3rd round, and 3 enemies left against 1 guy (who was an idiot, no offense). WE LOST!!!!!! Well anyway, if you have any tips about how to beat it on any map (preferably on Lost Platoon) post a comment on this post and I will look at it.

Call of Duty Modern Warfare 2 help

Are you having trouble beating a few levels on veteren? All you have to do is find a good sniping place when you have a few other guys helping you like Ghost or McTavish (AKA:Soap). They will take care of most of your enemies but there might be a lot so take some out in your special hiding place. Also, if you are looking for any enemy intel that you just cant find, I found a YouTube video by Rooster Teeth (who have a lot of video game videos that are awesome and helpful). Here is the link to the video (which is just the first part of the first act. You will have to look at the videos on the side and find the later ones).

http://www.youtube.com/watch?v=jUmaVEN8UDo

If anyone has any tips about how to beat the levels in the later Act II missions and the Act III missions, put a comment on this post and I will check it out.

Also, I found a site that shows how to get all of the emblems and titles. This is it:

http://emotionalninja.net/2009/11/15/modern-warfare-2-how-to-get-titles-and-emblems/