Natural disasters or other catastrophic events may cause damage or disruption to our operations, international commerce, and the global economy, and thus could have a negative effect on us. Our business operations are subject to interruption from earthquakes, hurricanes, tornadoes, floods, fires, severe weather, power shortages, pandemics and other public health concerns, terrorism, political unrest, telecommunications failure, vandalism, cyber-attacks, geopolitical instability, war and other actual or threatened military conflicts, the effects of climate change, actions taken by the U.S. or other governments in response to any of the foregoing, and other events beyond our control. Although we maintain disaster recovery plans, such events could disrupt our operations or those of our customers and suppliers, including through the inability of employees and billable professionals to work, destruction of facilities, loss of life, and adverse effects on supply chains, power, infrastructure and the integrity of information technology systems, any of which could materially increase our costs and expenses, delay or decrease revenue from our customers, disrupt our ability to maintain business continuity, or otherwise have a material adverse effect on our business, results of operations, financial condition, and prospects. Further, our insurance may not be sufficient to cover losses or additional expenses that we may sustain. In addition, we could incur significant costs to improve the climate-related resiliency of our infrastructure and otherwise prepare for, respond to, and mitigate the effects of climate changes.
Our business relies heavily on the health and safety of our employees, billable professionals, and customers. The impact of a health crisis such as a pandemic on our business, operations, and future financial performance could include, but is not limited to, adverse impacts to our operating income, operating margin, net income, earnings per share and operating cash flows, as expenses may not decrease at the same rate as revenues decline. In addition, our quarterly and annual revenue growth rates and expenses as a percentage of our revenues may differ significantly from our historical rates, and our future operating results may fall below expectations.