Can I rewind and fast-forward a Live TV program?

Updated 

For Live TV channels that are available on the internet, you can rewind and fast-forward a program on these channels. To see if a channel is available on the internet, look for a WiFi symbol with the channel name in mini-EPG or a WiFi symbol on a channel card in TV Guide. If a channel is available on the internet, left and right arrow keys from RCU could be used to rewind and fast forward respectively.