Mr. Scott Sacknoff is the Index Manager of the SPADE Defense Index (NYSE: ^DXS), the underlying index for the Powershares Aerospace & Defense ETF (NYSE: PPA). The SPADEÂ® Defense Index (NYSE: ^DXS) is a modified capitalization-weighted index comprised of publicly traded companies that benchmarks the performance of companies involved with defense, homeland security, and space. The Index is composed of more than 50 firms with representative business activities including: naval vessels, military aircraft, missiles and munitions, battlespace awareness, C4ISR, network centric warfare, homeland security including border security and biometric and screening systems, and space systems. Index values are distributed by the NYSEarca under the ticker 'DXS'. The Powershares Aerospace & Defense Portfolio ETF, designed to track the SPADE Defense Index, trades under the ticker 'PPA'. Historical data for the Index is available from 30 December 1997. The ETF was launched on 26 October 2005 and is highly liquid.