Can these items safely pass through Airport Security?

Flying from Atlanta to Chicago to Lincoln (Nebraska) today(Sunday).

Sorry for the ,probably, dumb question but I am not accustomed to flying with my electronics and was wondering if these few items pass safely through the security checkpoints.

• Laptop (Alienware M11x)

• AC adapter for laptop

• External Hard Drive (Seagate goflex 1T)

• Iphone 3gs and Chrager

• Apple headphones

This will be my first time flying w/ electronics in my carry-ons. And the information on the computer/hard drive is relevant to an international "competition".

Thanks in advance AskReddit!