1. Opening Case in Chapter 2 (Competition in the US Market for Wireless Telecommunications)
2. Closing Case in Chapter 2 (The Market for Large Commercial Aircraft)

1. Use the 5-force model to describe and evaluate the intensity of rivalry among established companies in the US telecommunications industry. Make sure you consider the four factors (competitive structure; demand conditions; cost conditions; and height of exit barriers) when evaluating the intensity of rivalry.

2. Use the 5-force model to evaluate the risk of entry into the commercial aircraft industry. Make sure you consider the barriers to entry discussed in the model.Discusshow the barriers across segments differ and the reasons for the difference.

Porter's 5 forces are:

1. Competition in the industry
2. Potential of new entrants into the industry
3. Power of suppliers
4. Power of customers
5. Threat of substitute products