Northrop Grumman

40/60

40% Equity

U.S. Large-Cap Blend
5% U.S Equity Fund
U.S. Small-Cap Blend
15%  Small Cap Fund
International Equity Blend
15%  International Equity fund
Emerging Markets
5%  Emerging Markets Fund

60% Fixed Income

Short-Term Bonds
15%  Stable Value Fund
Intermediate Bonds
45% Core Bond Index Fund

60/40

60% Equity

U.S. Large-Cap Blend
7.5% U.S Equity Fund
U.S. Small-Cap Blend
22.5%  Small Cap Fund
International Equity Blend
22.5%  International Equity fund
Emerging Markets
7.5%  Emerging Markets Fund

40% Fixed Income

Short-Term Bonds
10%  Stable Value Fund
Intermediate Bonds
30% Core Bond Index Fund

80/20

80% Equity

U.S. Large-Cap Blend
10% U.S Equity Fund
U.S. Small-Cap Blend
30%  Small Cap Fund
International Equity Blend
30%  International Equity fund
Emerging Markets
10%  Emerging Markets Fund

20% Fixed Income

Short-Term Bonds
5%  Stable Value Fund
Intermediate Bonds
15% Core Bond Index Fund 

The following asset classes are missing from this portfolio:
U.S. REITS
Int'l REITS
Inflation Protected Securities

You should try to invest in as many of these asset classes as possible through IRA or individual taxable accounts to arrive at a portfolio that comes close to the chart below: